Photo Credits

The castle photos on CastleMapper come from Wikimedia Commons. Each is used under the license its photographer chose, listed below with a link to the original file.

• Abbot's TowerColin Kinnear, CC BY-SA 2.0
• Aberdeen CastleAnthony Foster, CC BY-SA 2.0
• Aberdour CastleAndy Hawkins, CC BY-SA 2.0
• Aberdyfi CastleNigel Brown, CC BY-SA 2.0
• Aberedw CastleBill Nicholls, CC BY-SA 2.0
• Abergavenny CastleJeremy Bolwell, CC BY-SA 2.0
• Abergeldie CastlePeter Gordon, CC BY-SA 2.0
• Aberuchill CastleDr Richard Murray, CC BY-SA 2.0
• Aberystwyth CastleLlywelyn2000, CC BY-SA 4.0
• Abinger CastleColin Smith, CC BY-SA 2.0
• Aboyne CastleAlan Findlay, CC BY-SA 2.0
• Achallader CastleGraham Ellis, CC BY-SA 2.0
• Achanduin CastlePaul Biggin, CC BY-SA 2.0
• Ackergill TowerLeeNapier at English Wikipedia, Public domain
• Acton Burnell CastleMortimerCat, CC BY 3.0
• Acton CastleNilfanion, CC BY-SA 4.0
• Affeton CastleTony Dunlop, CC BY-SA 2.0
• Affleck CastleDouglas Nelson, CC BY-SA 2.0
• Aghalard Castledougf, CC BY-SA 2.0
• Aikenway CastleAnne Burgess, CC BY-SA 2.0
• Aikwood TowerAstrid H, CC BY-SA 2.0
• Airds CastleJohnny Durnan, CC BY-SA 2.0
• Airlie CastleJames Eadie Reid 1859–1928, Public domain
• Airth CastleJames Allan, CC BY-SA 2.0
• Alberbury CastlePeter Craine, CC BY-SA 2.0
• Albro Castleceridwen, CC BY-SA 2.0
• Aldford CastleJohn S Turner, CC BY-SA 2.0
• Aldie CastleJames Allan, CC BY-SA 2.0
• Aldourie Castledave conner, CC BY 2.0
• Allardice CastleAlan Thomson, CC BY-SA 2.0
• Allesley CastleAnthony Vosper, CC BY-SA 2.0
• Allington CastlePrioryman, CC BY-SA 4.0
• Alloa TowerAllyD at English Wikipedia, Public domain
• Alloway MoteRosser1954, CC BY-SA 4.0
• Allt y GaerGraham Horn, CC BY-SA 2.0
• Almond CastleRob Burke, CC BY-SA 2.0
• Alnwick CastleThomas Quine, CC BY 2.0
• Altinaghree CastleNick W, CC BY-SA 2.0
• Alton CastleDennis Thorley, CC BY-SA 2.0
• Amberley CastleJonathan Day from Brighton, UK, CC BY 2.0
• Amisfield TowerFrancis Grose (Life time:1789), Public domain
• Amroth CastleStuart Logan, CC BY-SA 2.0
• Anstey CastleLorraine and Keith Bowdler, CC BY-SA 2.0
• Antrim CastleWikimedia Commons, Public domain
• Apley CastleAndy and Hilary, CC BY-SA 2.0
• Appleby CastleStephen Craven, CC BY-SA 2.0
• Archbold's CastleDDoghaus, CC BY-SA 4.0
• Ardamullivan CastleMike Searle, CC BY-SA 2.0
• Ardblair CastleAlan Reid, CC BY-SA 2.0
• Ardee CastleNuala Furley, CC BY-SA 4.0
• Ardencaple CastleCmacauley, CC BY 3.0
• Ardfinnan CastleMike Searle, CC BY-SA 2.0
• Ardgillan CastleGsmithEIDW at English Wikipedia, Public domain
• Ardglass CastleArdfern, CC BY-SA 3.0
• Ardgowan CastleThomas Nugent, CC BY-SA 2.0
• Ardross CastlePaul Taylor, CC BY-SA 2.0
• Ardrossan CastleTravisNygard, CC BY 3.0
• Ardstinchar CastleBilly McCrorie, CC BY-SA 2.0
• Ardtornish CastleThe original uploader was Mephiston999 at English Wikipedia., CC BY 3.0
• Ardvourlie CastleMike Pennington, CC BY-SA 2.0
• Ardvreck CastleOakley Cundall, CC BY-SA 4.0
• Arkin's CastleRonan Mac Giollapharaic, CC BY-SA 4.0
• Armadale CastleWojsyl, CC BY-SA 3.0
• Armathwaite CastlePeter McDermott, CC BY-SA 2.0
• Arnot TowerC Munro, CC BY-SA 4.0
• Arnside TowerJoyen69, CC BY-SA 4.0
• Aros CastleOtter, CC BY-SA 3.0
• Arundel CastleTim Sheerman-Chase, CC BY 4.0
• Ascot d'Oilly CastleAndy Stephenson, CC BY-SA 2.0
• Ascott Earl CastleAndy Stephenson, CC BY-SA 2.0
• Ashby de la Zouch CastlePahazzard, CC BY-SA 3.0
• Ashford Castleyanshoof • שיחה • דרוש משתמש שיש לגביו הסכמה כללית בוויקי לניסוי מעניין (Transfered by מתניה/Original uploaded by Yanshoof), CC BY-SA 3.0
• Ashintully CastleSinclair Aytoun, CC BY-SA 2.0
• Ashley CastleRosemary Oakeshott, CC BY-SA 2.0
• Ashton Keynes CastleMartin Elliott, CC BY-SA 2.0
• Ashtown CastleFrank Winkelmann, CC BY 3.0
• Askerton CastleKeith Salvesen, CC BY-SA 2.0
• Aslockton CastleAlan Murray-Rust, CC BY-SA 2.0
• Asloun CastleRichard Paxman, CC BY-SA 2.0
• Astwell CastleAllan Fea (1860 - 1956)?, Public domain
• Athcarne CastleKieran Campbell, CC BY-SA 2.0
• Athclare CastleMike Searle, CC BY-SA 2.0
• Athenry CastleIngo Mehling, CC BY-SA 3.0
• Athlone CastleSgbrito at Portuguese Wikipedia, Public domain
• Athlumney Castle瑞丽江的河水, CC BY-SA 4.0
• Auchans CastleRosser1954, Public domain
• Auchen CastleM J Richardson, CC BY-SA 2.0
• Auchen Castle HotelRollinmarcbolan (talk) (Uploads), GFDL
• Auchenbathie TowerRosser1954, CC BY-SA 3.0
• Auchencloigh CastleKath Jones, CC BY-SA 2.0
• Auchenharvie CastleRosser1954 at English Wikipedia, Public domain
• Auchenhove CastleStanley Howe, CC BY-SA 2.0
• Auchenskeoch CastleHugh Close, CC BY-SA 2.0
• Auchindoun CastleGeorge Washington Wilson, Public domain
• Auchinleck CastleLeslie Barrie, CC BY-SA 2.0
• Auchterhouse CastleJames Allan, CC BY-SA 2.0
• Auckland CastlePit-yacker, CC BY-SA 3.0
• Audley's CastleCaroline Devlin, CC BY-SA 2.0
• Aughnanure CastleThe original uploader was Miguev at English Wikipedia., CC BY 3.0
• Augill CastleBob Harvey, CC BY-SA 2.0
• Auldhame CastleLisa Jarvis, CC BY-SA 2.0
• Avochie CastleAnne Burgess, CC BY-SA 2.0
• Aydon CastleHadrianus1959, CC BY-SA 4.0
• Ayton CastleJThomas, CC BY-SA 2.0
• Ayton CastleJames Yardley, CC BY-SA 2.0
• Baconsthorpe CastleAaron Boardley, CC BY-SA 3.0
• Badenyon CastleStanley Howe, CC BY-SA 2.0
• Baggotrath CastleGrose, Captain Francis. Original uploader was Suckindiesel at en.wikipedia, Public domain
• Baginton CastleSnowmanradio at English Wikipedia, CC BY-SA 3.0
• Baile HillOriginally uploaded by Dbam (Transferred by H4stings), Public domain
• Bakewell CastleDave.Dunford, CC BY-SA 4.0
• Balconie CastleQuintusPetillius, Public domain
• Baldoon CastleAndy Farrington, CC BY-SA 2.0
• Balfluig CastleAnne Burgess, CC BY-SA 2.0
• Balfour CastleAlan Morrison, CC BY-SA 2.0
• Balgonie CastleNo machine-readable author provided. Supergolden assumed (based on copyright claims)., CC BY-SA 3.0
• Balhousie CastlePaul McIlroy, CC BY-SA 2.0
• Balintore CastleSomethingOrOther at English Wikipedia, CC BY-SA 3.0
• Ballikinraintony ferrie, CC BY-SA 2.0
• Ballinacarriga Castle456valerie, CC BY-SA 4.0
• Ballinafad CastleDaniel Waters, Co. Sligo, Ireland from Ireland, CC BY 2.0
• Ballinalacken CastleNo machine-readable author provided. Bogman assumed (based on copyright claims)., CC BY 2.5
• Ballinbreich CastleJim Bain, CC BY-SA 2.0
• Ballincollig CastleBrendandiamond, CC BY-SA 3.0
• Ballindalloch CastleAnne Burgess, CC BY-SA 2.0
• Ballinskelligs CastleMike Searle, CC BY-SA 2.0
• Ballone CastleDg-505, CC BY 3.0
• Ballycar CastleDrawn by Thomas Dineley published by James Frost in 1893 but was also published earlier, Public domain
• Ballycarbery CastleJoachimKohlerBremen, CC BY-SA 4.0
• Ballycowan CastleKieran Campbell, CC BY-SA 2.0
• Ballygally CastleKenneth Allen, CC BY-SA 2.0
• Ballygunner CastleMike Searle, CC BY-SA 2.0
• Ballyhannon CastleRoger Diel, CC BY-SA 2.0
• Ballyheigue CastleNo machine-readable author provided. Kglavin~commonswiki assumed (based on copyright claims)., CC BY-SA 2.5
• Ballylahan CastlePamela Norrington, CC BY-SA 2.0
• Ballyloughan CastleVisionsofthePast, CC BY-SA 4.0
• Ballymalis CastleMike Searle, CC BY-SA 2.0
• Ballymarkahan CastleMike Searle, CC BY-SA 2.0
• Ballymoon CastlePoleary91, CC BY-SA 4.0
• Ballymore CastleMike Searle, CC BY-SA 2.0
• Ballymote CastleWillie Duffin, CC BY-SA 2.0
• Ballymoty Motte瑞丽江的河水, CC BY-SA 4.0
• Ballynahow Castledougf, CC BY-SA 2.0
• Ballyshannon CastleGavigan 01 at English Wikipedia, CC BY 2.5
• Balmangan TowerChris Andrews, CC BY-SA 2.0
• Balmanno CastleB4bees from Kinross, Scotland, CC BY 2.0
• Balquhain CastleGreg Stringham, CC BY-SA 2.0
• Balrothery TowerOffdaw, CC BY-SA 4.0
• Balthayock CastleJames Allan, CC BY-SA 2.0
• Balvaird CastleBrian D Osborne, CC BY-SA 2.0
• Balvenie CastleGeorge Washington Wilson, Public domain
• Bamburgh CastleMichael Hanselmann - Quaoar10, CC BY-SA 3.0
• Bampton CastleRichard Nevell, CC BY-SA 4.0
• Bampton Castle(Lobsterthermidor (talk) 11:57, 4 July 2014 (UTC)), Public domain
• Banff CastleAlisdair Mclean, CC BY-SA 2.0
• Banwell CastleThis file was derived from: Banwell Castle - geograph.org.uk - 1126175.jpg, CC BY-SA 2.0
• Barberstown CastleHarold Strong, CC BY-SA 2.0
• Barcaldine CastleTom Parnell, CC BY-SA 4.0
• Bardowie CastleThomas Annan, Public domain
• Bargy CastleDavid Hawgood, CC BY-SA 2.0
• Barholm CastleJbrennan, Public domain
• Barland CastleTrevor Rickard, CC BY-SA 2.0
• Barmeath CastleKieran Campbell, CC BY-SA 2.0
• Barmoor CastleNorman MacKillop, CC BY-SA 2.0
• Barnard CastleRobert Scarth from London, England, CC BY-SA 2.0
• Barnbougle CastleJonathan Oldenbuck, CC BY-SA 3.0
• Barnes CastleCalum McRoberts, CC BY-SA 2.0
• Barnhills TowerWalter Baxter, CC BY-SA 2.0
• Barnstaple CastleJack1956, CC BY-SA 4.0
• Barntown CastleMike Searle, CC BY-SA 2.0
• Barnwell CastleWill Lovell, CC BY-SA 2.0
• Barony and Castle of CorsehillRosser1954 at English Wikipedia, Public domain
• Barony and Castle of GiffenThe original uploader was Rosser1954 at English Wikipedia., Public domain
• Barony and Castle of Kilbirniewfmillar, CC BY-SA 2.0
• Barony of KerslandRosser1954, CC BY-SA 3.0
• Barr Castlewfmillar, CC BY-SA 2.0
• Barr CastleRosser1954 Roger Griffith, CC BY-SA 3.0
• Barra CastleJames Cassie, Public domain
• Barretstown CastleKevinRooney, Public domain
• Barry CastleCath Mudford, CC BY-SA 3.0
• Barryscourt CastleThe Speckled Bird, CC BY-SA 4.0
• Barscobe CastleJMiall, CC BY-SA 3.0
• Barwick-in-Elmet CastleChemical Engineer, CC BY-SA 4.0
• Basing HouseSandy B, CC BY-SA 2.0
• Bass CastleLisa Jarvis, CC BY-SA 2.0
• Bass of InverurieColin Smith, CC BY-SA 2.0
• Bavelaw CastleAnne Burgess, CC BY-SA 2.0
• Bayard's Cove FortTroxx, Public domain
• Baynard Castleunknown, Ordnance Survey, Public domain
• Baynard's CastleWikimedia Commons, Public domain
• Beaudesert CastleChris Gunns, CC BY-SA 2.0
• Beaufort CastleDuncan David McColl, CC BY-SA 2.0
• Beaufront CastleP Glenwright, CC BY-SA 2.0
• Beaumaris CastleLlywelyn2000, CC BY-SA 4.0
• Bedford CastleMatthew Paris, Public domain
• Bedlay CastleDrawn by User:Supergolden, CC BY-SA 3.0
• Beeston CastleTCExplorer, CC BY-SA 2.0
• Beldorney CastleAnne Burgess, CC BY-SA 2.0
• Belfast CastlePortwilliamborn, CC BY-SA 4.0
• Bellingham CastleLes Hull, CC BY-SA 2.0
• Bellister CastleAnthony Parkes, CC BY-SA 2.0
• Belltrees PeelLeslie Barrie, CC BY-SA 2.0
• Belsay CastleBrian Norman, CC BY-SA 2.0
• Belvelly CastleMike Searle, CC BY-SA 2.0
• Belvoir CastleNancy, CC BY-SA 4.0
• Bemersyde HouseKevin Rae, CC BY-SA 2.0
• Benburb CastleStörfix, CC BY-SA 3.0 de
• Benington CastleJeff Tomlinson, CC BY-SA 2.0
• Benton CastleDavid Purchase, CC BY-SA 2.0
• Berkeley CastlePhilip Halling, CC BY-SA 2.0
• Berkhamsted CastleWinstainforth at English Wikipedia, CC BY-SA 3.0
• Berriedale CastleStanley Howe, CC BY-SA 2.0
• Berry Pomeroy CastleJ Morley (Smalljim), CC BY 2.5
• Berwick CastleEuan Nelson, CC BY-SA 2.0
• Betchworth CastlePeter van der Linden, CC BY-SA 3.0
• Beverston CastleWikimedia Commons, CC BY-SA 2.5
• Bewcastle CastlePeter McDermott, CC BY-SA 2.0
• Bickleigh CastleSmb1001, CC BY-SA 3.0
• Biggar CastleAlan Stewart, CC BY-SA 2.0
• Billie CastleRichard Webb, CC BY-SA 2.0
• Birr CastleThe original uploader was Tpower at English Wikipedia., CC BY-SA 3.0
• Birse CastleColin Smith, CC BY-SA 2.0
• Bishop's CastleJohn Slezer (d. 1717), Public domain
• Bishop's Palace, KirkwallVan de Beek at nl.wikipedia, CC BY-SA 3.0
• Bishop's Palace, LlandaffPhotograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0
• Bishopton CastleMick Garratt, CC BY-SA 2.0
• Bitchfield TowerHadrianus1959, CC BY-SA 4.0
• Bite-about PeleRichard Webb, CC BY-SA 2.0
• Black BaronyMorley Sewell, CC BY-SA 2.0
• Black Castle of MoulinAndrew Wood, CC BY-SA 2.0
• Blackadder HouseUnknown authorUnknown author, Public domain
• Blackcraig CastleRichard Webb, CC BY-SA 2.0
• Blackhall ManorBgillesp, CC BY-SA 3.0
• Blackness CastleDr John Wells, CC BY 3.0
• Blackrock CastleRaúl Corral, CC BY-SA 3.0
• Blackrock CollegeSarah777, Public domain
• Blackwater CastleMike Searle, CC BY-SA 2.0
• Blaenllynfi CastleJeremy Bolwell, CC BY-SA 2.0
• Blair CastleEusebius, CC BY 3.0
• Blairfindy CastleRichard Doake, CC BY-SA 2.0
• Blairquhan CastleJonathan Oldenbuck, CC BY-SA 3.0
• Blake's CastleGillfoto, CC BY-SA 4.0
• Blanerne CastleWalter Baxter, CC BY-SA 2.0
• Blarney CastleGerd Eichmann, CC BY-SA 4.0
• Blenkinsopp CastleKarl and Ali, CC BY-SA 2.0
• Blervie CastleAnne Burgess, CC BY-SA 2.0
• Bletsoe CastleThomas Fisher (1772-1836), Public domain
• Boddam CastleRichard Slessor, CC BY-SA 2.0
• Bodelwyddan CastleLlywelyn2000, CC BY-SA 4.0
• Bodiam CastleAntony McCallum, CC BY-SA 3.0
• Boghall CastleWalter Baxter, CC BY-SA 2.0
• Bognie CastleJames Allan, CC BY-SA 2.0
• Bolbec CastleRob Farrow, CC BY-SA 2.0
• Bolebroke CastleNigel Freeman, CC BY-SA 2.0
• Bolesworth CastleJonathan Hutchins, CC BY-SA 2.0
• Bolingbroke CastleRichard Croft, CC BY-SA 2.0
• Bolsover CastleStephen G Taylor, CC BY-SA 2.0
• Bolton CastleBob Weyker, CC BY-SA 3.0
• Bonhard CastleMacGibbon, David, 1831-1902; Ross, Thomas, 1839-1930, Public domain
• Bonkyll CastleBrendandh, CC BY 3.0
• Bonshaw TowerColin Smith, CC BY-SA 2.0
• Borthwick CastlePeter van der Wielen, CC BY-SA 3.0
• Borve CastleOtter, CC BY-SA 3.0
• Bossiney CastleDavid Smith, CC BY-SA 2.0
• Bothal CastleDRomley, CC BY-SA 3.0
• Bothwell CastleJames Mérigot, Public domain
• Bourne CastleBob Harvey, CC BY-SA 2.0
• Bowes CastleAndy Jamieson, CC BY-SA 2.0
• Boyne CastleAnne Burgess, CC BY-SA 2.0
• Braal CastleDavid Martin, CC BY-SA 2.0
• Brackenhill TowerOliver Dixon, CC BY-SA 2.0
• Bradenstoke PriorySamuel & Nathaniel Buck, Public domain
• Braemar CastleGeorge Washington Wilson, Public domain
• Brahan CastleW. Ritchie & Sons, Public domain
• Braikie CastleAlan Morrison, CC BY-SA 2.0
• Bramber CastleMichael Coppins, CC BY-SA 4.0
• Brampton Bryan CastlePhilip Pankhurst https://www.geograph.org.uk/profile/19770, CC BY-SA 2.0
• Brancepeth CastleOliver Dixon, CC BY-SA 2.0
• Brandon CastleDavid Stowell, CC BY-SA 2.0
• Branthwaite HallJohn Holmes, CC BY-SA 2.0
• Branxholme CastleWalter Baxter, CC BY-SA 2.0
• Brechin CastleKylemunro1, Public domain
• Brecon CastlePhilip Pankhurst, CC BY-SA 2.0
• Bredwardine CastleTrevor Rickard, CC BY-SA 2.0
• Bridge CastleVictorPaulK, CC BY-SA 4.0
• Bridgnorth CastleDr Phillip McCavity at English Wikipedia, CC BY 3.0
• Bridgwater CastleJohn Chubb (18th century), Public domain
• Bright CastleEric Jones, CC BY-SA 2.0
• Brimpsfield CastleAndy Dolman, CC BY-SA 2.0
• Brims CastleBill Henderson, CC BY-SA 2.0
• Brinklow CastleWikimedia Commons, Public domain
• Bristol CastleThe book's text by JF Nicholls (d. 1883) and John Taylor (d. 1893). Death dates citation: doi:10.1093/library/s1-V.1.86. Images by unknown engravers, and thus are PD due to age, per the relevant British legislation, Public domain
• British CampBritish_camp_central_mound_2005.jpg: Original uploader was Spoonfrog at en.wikipedia derivative work: Nev1 (talk), Public domain
• Broadstone CastleRosser1954 Roger Griffith, Public domain
• Brochel CastleStefanServos at German Wikipedia, CC BY-SA 3.0
• Brodie CastleJThomas, CC BY-SA 2.0
• Bronllys CastleKeith Salvesen, CC BY-SA 2.0
• Bronsil CastleBob Embleton, CC BY-SA 2.0
• Brough CastleNo machine-readable author provided. Supergolden assumed (based on copyright claims)., CC BY-SA 3.0
• Brough Castledavid glass, CC BY-SA 2.0
• Brougham CastleMichael D Beckwith, CC0
• Broughton CastleDavid Stowell, CC BY-SA 2.0
• Broughty CastleTimVickers, Public domain
• Brownsea CastleIain A. Wanless, https://www.flickr.com/photos/reemul/, CC BY 2.0
• Brunstane Castledave peck, CC BY-SA 2.0
• Bryn Amlwg CastleRichard Greenwood, CC BY-SA 2.0
• Bryn Bras CastleEric Jones, CC BY-SA 2.0
• Buckenham CastleAndy Peacock, CC BY-SA 2.0
• Buckton CastleRichard Nevell from London, United Kingdom, CC BY-SA 2.0
• Builth CastleEirian Evans, CC BY-SA 2.0
• Buittle CastleChris Newman, CC BY-SA 2.0
• Buittle PlaceChris Newman, CC BY-SA 2.0
• Bungay CastleScott Anderson from UK, CC BY 2.0
• Bunratty CastleJon Sullivan, Public domain
• Burgie CastleAnne Burgess, CC BY-SA 2.0
• Burleigh CastleWikimedia Commons, CC BY-SA 3.0
• Burley CastleKate Jewell, CC BY-SA 2.0
• Burnchurch CastleSimonak, CC BY-SA 4.0
• Burneside HallRichard Buck, CC BY-SA 2.0
• Burradon TowerSteve M, CC BY-SA 2.0
• Burrow MumpSimon Burchell, CC BY-SA 4.0
• Burt CastleKenneth Allen, CC BY-SA 2.0
• Burton in Lonsdale CastleRon Shirt, CC BY-SA 2.0
• Burwell CastleAjay Tegala, CC BY-SA 2.0
• Bury CastleRoger Cornfoot, CC BY-SA 2.0
• Bury CastleChemical Engineer, CC BY-SA 4.0
• Bury MountCj1340, CC BY-SA 3.0
• ButtingtonChris Heaton, CC BY-SA 2.0
• Bytham CastleBob Harvey, CC BY-SA 2.0
• Bywell CastleDennis Lovett, CC BY-SA 2.0
• Cadzow CastleNo machine-readable author provided. Supergolden assumed (based on copyright claims)., CC BY-SA 3.0
• Caer Castell CampSeth Whales, CC BY-SA 4.0
• Caer GybiNigel Mykura, CC BY-SA 2.0
• Caerau HillfortJohn Lord, CC BY-SA 2.0
• Caergwrle CastleClint Heacock (talk), CC BY-SA 3.0
• Caerhays CastleClaudiu Bichescu, CC BY-SA 3.0
• Caerlaverock CastleDeFacto, CC BY-SA 4.0
• Caernarfon CastleLlywelyn2000, CC BY-SA 4.0
• Caerphilly CastleCadw, OGL v1.0
• Caherduff CastleJlahorn, CC BY-SA 3.0
• Caherkinmonwee CastleMike Searle, CC BY-SA 2.0
• Cahir CastleChmouel Boudjnah Original uploader was Chmouel at fr.wikipedia, CC BY-SA 3.0
• Cainhoe CastleDennis simpson, CC BY-SA 2.0
• Cairnbulg CastleAstrid H, CC BY-SA 2.0
• Cairns CastleRichard Webb, CC BY-SA 2.0
• Caisteal MaolOtter, CC BY-SA 3.0
• Caister CastleBob Crook, CC BY-SA 2.0
• Calderwood CastleDavid MacGibbon (1831-1902), and Thomas Ross., Public domain
• Caldicot CastleNick, CC BY 2.0
• Caldwall CastleP L Chadwick, CC BY-SA 2.0
• Caldwell, East Renfrewshirewfmillar, CC BY-SA 2.0
• Callaly Castleoriginal: Mick Garratt derivative work: Paravane (talk), CC BY-SA 2.0
• Calshot CastleGeni, CC BY-SA 3.0
• Caludon CastleMum's taxi (Wikipedia Takes Coventry participant), CC BY-SA 3.0
• Calvay CastleColin Wheatley, CC BY-SA 2.0
• Camber CastleOast House Archive, CC BY-SA 2.0
• Cambridge CastleSamuel Buck / Nathaniel Buck, Public domain
• Candleston CastleThruxton, CC BY 3.0
• Canterbury CastleOast House Archive, CC BY-SA 2.0
• Cantwell's CastleA.-K. D., CC BY-SA 4.0
• Caprington Castlewfmillar, CC BY-SA 2.0
• Carberry TowerJimmydenham, Public domain
• Carbury CastleDougbermingham at English Wikipedia, CC0
• Cardiff CastleTevfik Teker, CC BY 3.0
• Cardigan CastleLlywelyn2000, CC BY-SA 4.0
• Cardoness CastleOtter, CC BY-SA 3.0
• Careston CastleAlan Morrison, CC BY-SA 2.0
• Carew CastleKaren Sawyer, CC BY-SA 4.0
• Carisbrooke CastleDeFacto, CC BY-SA 4.0
• Carleton CastleRosser1954, CC BY-SA 4.0
• Carlisle CastleJohn Gibson, CC BY-SA 2.0
• Carlow CastleAge Bosma, CC BY-SA 3.0
• Carlton CastleChris, CC BY-SA 2.0
• Carmarthen CastleLlywelyn2000, CC BY-SA 3.0
• Carn Brea CastleBengoeswild, CC BY-SA 3.0
• Carnasserie CastleBubobubo2, CC BY-SA 3.0
• Carndochan CastleEirian Evans, CC BY-SA 2.0
• Carra CastleAnne Burgess, CC BY-SA 2.0
• Carreg Cennen CastleNigel Davies, CC BY-SA 2.0
• Carreghofa CastleJohn Haynes, CC BY-SA 2.0
• Carribber CastleAlexander Archer, Public domain
• Carrick CastleSarah Charlesworth, CC BY-SA 2.0
• Carrickabraghy CastleKenneth Allen, CC BY-SA 2.0
• Carrickfergus CastleStewart, CC BY-SA 2.0
• Carrickkildavnet CastleMichelle Owner of the Squishy from Denver, CC BY 2.0
• Carrickmines CastleSarah777 at English Wikipedia, Public domain
• Carriganass CastleMike Searle, CC BY-SA 2.0
• Carrigaphooca CastleCeoil (talk) (Uploads), Public domain
• Carrignacurra CastleMike Searle, CC BY-SA 2.0
• Carrignamuck Tower HouseMike Searle, CC BY-SA 2.0
• CarrigogunnellStevesphotography, CC BY-SA 4.0
• Carrigrohane CastleGarry Dickinson, CC BY-SA 2.0
• Carsluith CastleTom Parnell, CC BY-SA 4.0
• Cartington CastleMike Searle, CC BY-SA 2.0
• Cary CastleGraham Horn, CC BY-SA 2.0
• Castell AberlleiniogStephen Elwyn RODDICK, CC BY-SA 2.0
• Castell ArnalltPhilip Halling, CC BY-SA 2.0
• Castell Bryn GwynRichard Keatinge, CC BY-SA 3.0
• Castell CochHchc2009, CC BY-SA 4.0
• Castell DeudraethUser:Chrisgj6, Public domain
• Castell DinasJasper Fforde, CC BY-SA 3.0
• Castell Dinas BrânLlywelyn2000, CC BY-SA 4.0
• Castell GwallterBill Boaden, CC BY-SA 2.0
• Castell MoelRhyshuw1, CC BY-SA 3.0
• Castell y BereLlywelyn2000, CC BY-SA 4.0
• Castell-y-mynachDr Mary Gillham Archive Project, CC BY 2.0
• Castle Acre Castle and town wallsMichael Garlick, CC BY-SA 2.0
• Castle Ashby HouseR Neil Marshman, CC BY-SA 3.0
• Castle BalfourKenneth Allen, CC BY-SA 2.0
• Castle BatchAdrian and Janet Quantock, CC BY-SA 2.0
• Castle CampbellTom Parnell, CC BY-SA 4.0
• Castle CarraMike Searle, CC BY-SA 2.0
• Castle Cary Castlecarrickstone emily, CC BY-SA 2.0
• Castle CaulfieldStefan C. Kremer, CC BY-SA 3.0
• Castle CluggyBarry Ferguson, CC BY-SA 2.0
• Castle CoeffinColin Smith, CC BY-SA 2.0
• Castle ConnellGarry Dickinson, CC BY-SA 2.0
• Castle DonovanMike Searle, CC BY-SA 2.0
• Castle ForbesGilbert Scott, CC BY-SA 2.0
• Castle FraserKarora, Public domain
• Castle GrantAnn Harrison, CC BY-SA 2.0
• Castle HackettMike Searle, CC BY-SA 2.0
• Castle HillColin Smith, https://www.geograph.org.uk/profile/3972, CC BY-SA 2.0
• Castle HillPhilip Halling, CC BY-SA 2.0
• Castle HotelRodw, CC0
• Castle HoweHumphrey Bolton, CC BY-SA 2.0
• Castle KnobDumelow, CC BY-SA 4.0
• Castle LeodColin Hepburn from Sale, UK, CC BY-SA 2.0
• Castle Levaneasylocum from Gourock, United Kingdom, CC BY 2.0
• Castle MacEwenJohn Ferguson, CC BY-SA 2.0
• Castle MenziesAnne Burgess, CC BY-SA 2.0
• Castle NaghtenWanfried-Dublin, CC BY-SA 4.0
• Castle NerocheDerek Harper, CC BY-SA 2.0
• Castle of MeyOrikrin1998, CC BY-SA 3.0
• Castle of Old WickFlaxton, CC BY-SA 3.0
• Castle of ParkStephen Bowden, CC BY-SA 2.0
• Castle of ParkJohn of Reading, Public domain
• Castle of RattrayClaire Pegrum, CC BY-SA 2.0
• Castle of St Johnjaqian from Dublin, Ireland, CC BY 2.0
• Castle OliverMygodfrey at en.wikipedia, CC BY-SA 3.0
• Castle OtwayLiam Hughes from Milwaukee, WI, USA, CC BY 2.0
• Castle Rising CastleAntony McCallum: Who is the uploader, photographer, full copyright owner and proprietor of WyrdLight.com, CC BY-SA 4.0
• Castle RocheHazazzy, CC BY-SA 3.0
• Castle RoyAkinom, CC BY 3.0
• Castle SalemMike Searle, CC BY-SA 2.0
• Castle SaundersonC.A.Saunderson, CC BY-SA 3.0
• Castle Semplewfmillar, CC BY-SA 2.0
• Castle Sinclair GirnigoeDorcas Sinclair, modified by Sir Gawain, CC BY-SA 2.0
• Castle StalkerNo machine-readable author provided. Gerpsych~commonswiki assumed (based on copyright claims)., CC BY-SA 3.0
• Castle StuartUser StaraBlazkova on cs.wikipedia, CC BY-SA 3.0
• Castle SweenPatrick Mackie, CC BY-SA 2.0
• Castle TarbetLisa Jarvis, CC BY-SA 2.0
• Castle TioramTommes, CC BY-SA 3.0
• Castle TumpPhilip Halling, CC BY-SA 2.0
• Castle UptonSarah McGuire, CC BY-SA 2.0
• Castle VarrichPaul Hermans, CC BY-SA 3.0
• CastlebawnRoger Diel, CC BY-SA 2.0
• CastlecraigJrimas, CC BY-SA 3.0
• Castlehill Towerjames denham, CC BY-SA 2.0
• CastlekirkNmwood189, CC BY-SA 4.0
• Castleknock CastleLaurel Lodged, CC BY-SA 4.0
• Castlelost CastleMookiePlays, CC BY-SA 4.0
• Castlemore MoatWanfried-Dublin, CC BY-SA 4.0
• CastlepookVeggiebenz, CC BY-SA 3.0
• Cathcart CastleDavid MacGibbon (1831-1902), and Thomas Ross, Public domain
• Caus CastleJohn M, CC BY-SA 2.0
• Cavers CastleWalter Baxter, CC BY-SA 2.0
• Caverswall CastleSamuel Hall Carter (1800-1889), Public domain
• Cawdor CastleGeorge Reid, Public domain
• Cawood CastleGordon Hatton, CC BY-SA 2.0
• Cefn Mably HouseWikimedia Commons, Public domain
• Cefnllys CastleNigel Brown, CC BY-SA 2.0
• Cessford CastleWalter Baxter, CC BY-SA 2.0
• Chanonry Castlepaddy heron, CC BY-SA 2.0
• Chartley CastleJeremy Weate, CC BY 2.0
• Chepstow Castleeszgé, CC BY-SA 3.0
• Chester CastleUnknown authorUnknown author, Public domain
• Chichester CastleSimon Carey, CC BY-SA 2.0
• Chiddingstone CastleHjamesberglen, CC BY-SA 4.0
• Chillingham CastleGlen Bowman from Newcastle, England, CC BY 2.0
• Chipchase CastleLes Hull, CC BY-SA 2.0
• Chirk CastleLlywelyn2000, CC BY-SA 4.0
• Christchurch CastleUlli1105, CC BY 3.0
• Cilgerran CastleWaterborough, CC BY-SA 3.0
• Cirencester CastleBrian Robert Marshall, CC BY-SA 2.0
• Clackmannan TowerOtter, CC BY-SA 3.0
• Claig CastleG. McKay, CC BY-SA 3.0
• Clara Castleliam murphy, CC BY-SA 2.0
• Clare CastleEvelyn Simak, https://www.geograph.org.uk/profile/14840, CC BY-SA 2.0
• Clarendon PalaceJim Linwood, CC BY 2.0
• Clavering CastleLibby norman, CC BY-SA 3.0
• Claxton CastleGraham Hardy, CC BY-SA 2.0
• Claypotts CastleBubobubo2, CC BY-SA 3.0
• Cleish CastleJames Allan, CC BY-SA 2.0
• Clent CastlePaul Brooker, CC BY-SA 2.0
• Clifford CastleHumphrey Bolton, CC BY-SA 2.0
• Clifton Hall, CumbriaThe original uploader was Brookie at English Wikipedia., CC BY-SA 3.0
• Clitheroe CastleLux01 at English Wikipedia, Public domain
• Cloghan CastleGeorge Victor Du Noyer MRIA (1817 – 3 January 1869), Public domain
• Clogrennane CastleA.-K. D., CC BY-SA 4.0
• Clomantagh Castledougf, CC BY-SA 2.0
• Clonbrock CastleWillthacheerleader18, CC0
• Cloncaird CastleMary and Angus Hogg, CC BY-SA 2.0
• Clonea CastleRobert French, Public domain
• Clonmore Castleliam murphy, CC BY-SA 2.0
• Cloonacauneen CastleEntropy, CC BY-SA 4.0
• Closeburn CastleKirkpatrick at English Wikipedia, CC BY 2.5
• Clough CastleMan vyi, Public domain
• Cloughoughter CastleOliver Dixon, CC BY-SA 2.0
• Clun CastlePhilip Halling, CC BY-SA 2.0
• Cluny CastleCosmolinzeegordon, CC BY-SA 3.0
• Cluny Crichton CastleStanley Howe, CC BY-SA 2.0
• Cockermouth CastleRichard Nevell, CC BY-SA 3.0
• Cockle Park TowerPat Pierpoint, CC BY-SA 2.0
• Cockroad Wood CastleMartin Hibbert, CC BY 2.0
• Codnor CastleDouglal, CC BY-SA 4.0
• Coity Castlekenneth rees, CC BY-SA 2.0
• Colchester CastleGeorge Gastin, CC BY-SA 3.0
• Colcombe CastleRev. John Swete, Public domain
• Collairnie CastleBrian Forbes, CC BY 2.0
• Colliston CastleDominic Dawn Harry and Jacob Paterson, CC BY-SA 2.0
• Colwyn CastleJasperfforde, CC BY-SA 3.0
• Comlongon CastleAngus Townley, CC BY-SA 2.0
• Compton CastleSmalljim, CC BY-SA 2.0
• Comrie CastleDavid Prentice Menzies, CC BY-SA 4.0
• Conisbrough CastleRob Bendall (Highfields), Attribution
• Conna CastleMike Searle, CC BY-SA 2.0
• Conwy CastleSource: Llywelyn2000Derivative: User:MathKnight, CC BY-SA 4.0
• Coolhull CastlePam Brophy, CC BY-SA 2.0
• Cooling Castleshirokazan, CC BY 2.0
• Coonagh CastleMike Searle, CC BY-SA 2.0
• Corbridge Vicar's PeleRHaworth, CC BY-SA 4.0
• Corby CastleLynne Kirton, CC BY-SA 2.0
• Corfe CastleAlbany E. Howarth, Public domain
• Corgarff CastleCamer01, CC BY-SA 3.0
• Corluddy CastleBlimey74, CC0
• Cornal TowerWalter Baxter, CC BY-SA 2.0
• Corr CastleKarri Huhtanen, CC BY 2.0
• Corra CastleGordon Brown, CC BY-SA 2.0
• Corsbie CastleWalter Baxter, CC BY-SA 2.0
• Corse CastleStanley Howe, CC BY-SA 2.0
• Cortachy CastlePeter van der Wielen, CC BY-SA 3.0
• Costessey HallUnknown authorUnknown author, Public domain
• Cotherstone CastleMike Quinn, CC BY-SA 2.0
• Coull CastleMick Garratt, CC BY-SA 2.0
• Coupland CastleLisa Jarvis, CC BY-SA 2.0
• Cousland CastleArchaeology Scotland, CC BY-SA 4.0
• Couston CastleM J Richardson, CC BY-SA 2.0
• Coventry CastleRock drum, CC BY-SA 3.0
• Cow CastleMaurice Clements, CC BY-SA 2.0
• Cowes CastleNilfanion, CC BY-SA 3.0
• Cowie CastleAlan Findlay, CC BY-SA 2.0
• Cowthally CastleWalter Baxter, CC BY-SA 2.0
• Coxton TowerAnne Burgess, CC BY-SA 2.0
• Craggaunowen CastlePinzgauer, CC BY-SA 3.0
• Craigcrook CastleKim Traynor, CC BY-SA 3.0
• Craigie CastleRosser1954 Roger Griffith, Public domain
• Craigievar CastleAnais Culot, CC BY-SA 4.0
• Craiglockhart CastleGeorge Hamilton, CC BY-SA 3.0
• Craigmillar CastlePhotograph by Stuart Yeates, from en:Flickr, CC BY-SA 2.0
• Craignethan CastleNo machine-readable author provided. Supergolden assumed (based on copyright claims)., CC BY-SA 3.0
• Craignish CastleHabsburger, Public domain
• Craigston CastleAnne Burgess, CC BY-SA 2.0
• Crail CastleKim Traynor, CC BY-SA 3.0
• Cramond TowerMrabbits (talk), CC BY-SA 3.0
• Cranshaws CastleLisa Jarvis, CC BY-SA 2.0
• Crathes CastleOyoyoy, CC BY-SA 3.0
• Craufurdland CastleAlan Reid, CC BY-SA 2.0
• Crawford CastleTerrorford at English Wikipedia, Public domain
• Crayke CastlePaul Buckingham, CC BY-SA 2.0
• Creich CastleJames Allan, CC BY-SA 2.0
• Cresswell CastleRob Lowe, CC BY-SA 2.0
• Cresswell Pele TowerHadrianus1959, CC BY-SA 4.0
• Crevenish CastleIJA, CC BY-SA 4.0
• Crewkerne CastleJonathan Billinger, CC BY-SA 2.0
• Criccieth CastleBarry Skeates from newbury, UK, CC BY 2.0
• Crichton CastleJames Duffield Harding, Public domain
• Crickhowell CastleNiki.L, CC BY-SA 4.0
• Croft CastleTony Hisgett from Birmingham, UK, CC BY 2.0
• Crom Castlehttps://secure.flickr.com/people/shrighley/, CC BY 3.0
• Cromarty CastleNo image credit, Public domain
• Crookston CastleRichard Sutcliffe, CC BY-SA 2.0
• Croom CastleSteveODowd, CC BY-SA 4.0
• Crosbie Castle and the Fullarton estateRosser1954 Roger Griffith, Public domain
• Cruggleton CastleAlan Brown, CC BY-SA 2.0
• Cuckney CastleEnchufla Con Clave, CC BY-SA 4.0
• Culcreuch CastleRichard Webb, CC BY-SA 2.0
• Cullahill CastleKrigh, CC BY 3.0
• Cullykhan CastleSarah Charlesworth, CC BY-SA 2.0
• Culverhay CastleRick Crowley, CC BY-SA 2.0
• Culzean CastleWikimedia Commons, CC BY-SA 3.0
• Cumbernauld CastleTexas Radio and The Big Beat, CC BY-SA 2.0
• Cunninghamhead EstateRosser1954 at English Wikipedia, Public domain
• Cymbeline's CastleRob Farrow, CC BY-SA 2.0
• Dacre CastleGeoff Gill, CC BY-SA 2.0
• Dairsie CastleJames Allan, CC BY-SA 2.0
• Dalcross CastleJames Allan, CC BY-SA 2.0
• Dalden TowerAndrew Curtis, CC BY-SA 2.0
• Dale CastleDara Jasumani, CC BY-SA 2.0
• Dalhousie CastleRHaworth, CC BY 2.5
• Dalkeith PalaceBenbilgri at en.wikipedia, Public domain
• Dalkey CastlePalanitboy, CC BY-SA 4.0
• Dally CastlePete Saunders, CC BY-SA 2.0
• Dalnaglar CastleDan, CC BY-SA 2.0
• Dalquharran Castlepaul c, CC BY-SA 2.0
• Dalton CastleChris Downer, CC BY-SA 2.0
• Daly CastleMike Searle, CC BY-SA 2.0
• Dalzell HouseJonathan Oldenbuck, CC BY-SA 3.0
• Danby CastleSimon Armstrong, CC BY-SA 3.0
• Dane John MoundRichard Nevell, CC BY-SA 3.0
• Danesmoate HouseJoho345, Public domain
• Dangan CastleJ. Stirling Coyne, Public domain
• Dardistown CastleKieran Campbell, CC BY-SA 2.0
• Darnaway CastleAnne Burgess, CC BY-SA 2.0
• Dartmouth CastleTroxx, Public domain
• Deal CastleJimRussell, CC BY-SA 4.0
• Dean CastleFraser Sutherland, CC BY 2.5
• Deddington CastleCharlesdrakew, Public domain
• Deel CastleRay Martin, Public domain
• Deganwy CastleLlywelyn2000, CC BY-SA 4.0
• Delgatie CastleThe photographer was probably (but not definitely) User:Topbanana or a sibling, parent or friend of his., Public domain
• Delves HallSimon Huguet, CC BY-SA 2.0
• Denbigh Castle and town wallsLlywelyn2000, CC BY-SA 4.0
• Denham CastleKeith Evans, CC BY-SA 2.0
• Denmylne CastleC.baillie, CC BY-SA 3.0
• Denton CastleIan Robertson, CC BY-SA 2.0
• Derg CastleKenneth Allen, CC BY-SA 2.0
• Derryhiveny CastleDfoxvog, CC BY-SA 4.0
• Derryquin CastleWilliam Herbert Stokes (1845-1874), Public domain
• Desmond CastleME, CC BY-SA 3.0
• Desmond Hall and CastleMike Searle, CC BY-SA 2.0
• Devizes CastleMike Faherty, CC BY-SA 2.0
• Dilham CastleEvelyn Simak, CC BY-SA 2.0
• Dilston CastlePeter Brooks, CC BY-SA 2.0
• Dinas EmrysMartinvl, CC BY-SA 4.0
• Dinefwr CastleAndrew Bone from Weymouth, England, CC BY 2.0
• Dingwall CastleQuintusPetillius, CC0
• Dinton CastleD Gore, CC BY-SA 2.0
• Dirleton CastleJonathan Oldenbuck, CC BY-SA 3.0
• Dobroyd CastleDvprknsn at English Wikipedia, CC BY-SA 3.0
• Dodleston CastleDave.Dunford, CC BY-SA 4.0
• Doe CastleOriginal uploaded by Brendandh (Transfered by Lvova), CC BY 2.5
• Dolbadarn CastleCadw, OGL v1.0
• Dolforwyn Castleuser Llywelyn2000, CC BY-SA 3.0
• Dolwyddelan CastleJeff Buck, CC BY-SA 2.0
• Donamon Castledougf, CC BY-SA 2.0
• Donegal CastleBenson Wills, CC BY-SA 2.0
• Donnington CastleWikimedia Commons, CC BY-SA 2.0
• Donore CastleJames Allan, CC BY-SA 2.0
• Doonagore CastleValfex, CC BY-SA 3.0
• Dornoch CastleTom Pennington, CC BY-SA 2.0
• Dorstone CastlePhilip Halling, CC BY-SA 2.0
• Dough CastleBob Jones, CC BY-SA 2.0
• Douglas CastleUser:Supergolden, CC BY-SA 3.0
• Doune CastleGodot13, CC BY-SA 4.0
• Doune of InvernochtyGordon Hatton, CC BY-SA 2.0
• Dover CastleChensiyuan, CC BY-SA 4.0
• Dowhill CastleWallace Shackleton, CC BY-SA 2.0
• Down End CastleRodw, CC0
• Drimnagh CastleEriclevik, CC BY-SA 4.0
• Drishane CastleMike Searle, CC BY-SA 2.0
• Drochil CastlePaul Hermans, CC BY-SA 3.0
• Dromagh CastleMike Searle, CC BY-SA 2.0
• Dromore CastleRobotforaday at en.wikipedia, Public domain
• Dromore CastleMike Searle, CC BY-SA 2.0
• Drum CastleIkiwaner, CC BY-SA 3.0
• Drumboe Castlelouise price, CC BY-SA 2.0
• Drumburgh CastleRose and Trev Clough, CC BY-SA 2.0
• Drumcoltran TowerAlison Stamp, CC BY-SA 2.0
• Drumharsna CastleJsilke, CC BY-SA 4.0
• Drumin CastleAndrew Stuart, CC BY-SA 2.0
• Druminnor CastleIain Ralston, CC BY-SA 4.0
• Drumlanrig CastleUnknown authorUnknown author, Public domain
• Drummond CastleTom Parnell, CC BY-SA 4.0
• Drumtochty CastleC Michael Hogan, CC BY-SA 2.0
• Dryhope TowerBrendandh (talk), CC BY 3.0
• Dryslwyn CastleNatasha de Vere & Col Ford, CC BY 2.0
• Duart CastlePhilippe Giabbanelli, CC BY-SA 3.0
• Dublin CastleWikimedia Commons, Public domain
• Duchal CastleRosser1954, CC BY-SA 4.0
• Dudhope CastleYdam, CC BY-SA 3.0
• Dudley CastleTony Hisgett from Birmingham, UK, CC BY 2.0
• Duffield CastleMike Bardill, CC BY-SA 2.0
• Duffus Castlevan de Beek, CC BY-SA 3.0
• Dumbarton CastleOtter, CC BY 3.0
• Dún Dealgan MotteDundalk99, CC BY-SA 4.0
• Dun RingillBryanmackinnon, Public domain
• DunamaseMeinirland.eu, CC BY-SA 3.0
• Dunasead CastleAndrew Wood, CC BY-SA 2.0
• Dunaverty CastleHerbert Maxwell, Public domain
• Dunbar CastlePhillip Capper from Wellington, New Zealand, CC BY 2.0
• Dunbeath CastleBill Henderson, CC BY-SA 2.0
• Dunboy Castlekevin higgins, CC BY-SA 2.0
• Duncraig CastleRichard Szwejkowski, CC BY-SA 2.0
• Dundaff CastleRobert Murray, CC BY-SA 2.0
• Dundanion CastleGuliolopez, CC BY-SA 3.0
• Dundarg CastleAnne Burgess, CC BY-SA 2.0
• Dundas CastleArchaicW, CC BY-SA 4.0
• Dunderave CastleBrian D Osborne, CC BY-SA 2.0
• Dundonald CastleDerek Ferris, CC BY-SA 2.0
• Dundrum CastleIan Blair, CC BY-SA 2.0
• Dunduff CastleDunduff, CC BY-SA 3.0
• Dunfermline PalaceChiswick Chap, CC BY-SA 3.0
• Dungarvan CastleAudrius Janecka, CC BY-SA 4.0
• Dungiven Castlebixentro, CC BY 2.0
• Dunglass CastleDrawn by F.A.Pernot and printed by A.Dewasme, Public domain
• Dunguaire CastleBoomur, CC BY-SA 3.0
• Dunham CastlePhotograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0
• Dunimarle CastleJim Barton, CC BY-SA 2.0
• Dunkerron CastleMike Searle, CC BY-SA 2.0
• Dunlop CastleRosser (talk), Public domain
• Dunlough CastleDunlough, Public domain
• Dunluce CastleWikimedia Commons, Public domain
• Dunmanus CastleMike Searle, CC BY-SA 2.0
• Dunmanway CastleAn exact copy by Daniel O'Brien, Surveyor, CC BY-SA 4.0
• Dunmoe CastleMike Searle, CC BY-SA 2.0
• Dunmore CastleDanielecDalton, CC BY-SA 4.0
• Dunnideer CastleColin Smith, CC BY-SA 2.0
• Dunninald CastleDominic Dawn Harry and Jacob Paterson, CC BY-SA 2.0
• Dunnottar CastleAnne Burgess, CC BY-SA 2.0
• Dunollie CastleGeorge Reid, Public domain
• Dunoon CastleWilliam Miller, Public domain
• Dunraven CastleMartin Ridley, Public domain
• Dunrobin CastleNo machine-readable author provided. Imamon~commonswiki assumed (based on copyright claims)., CC BY-SA 3.0
• Duns CastleRich Tea, CC BY-SA 2.0
• Dunsandle CastleMike Searle, CC BY-SA 2.0
• Dunsany Castle and DemesneSkarldrums, CC BY-SA 4.0
• Dunscaith CastleTom Parnell, CC BY-SA 4.0
• Dunseverick Castlemauldy, CC BY-SA 2.0
• Dunskey CastleAnne Burgess, CC BY-SA 2.0
• Dunsoghly CastleMike Searle, CC BY-SA 2.0
• Dunstaffnage CastleAnne Burgess, CC BY-SA 2.0
• Dunstanburgh Castlemattbuck (category), CC BY-SA 4.0
• Dunster CastleMike Crowe, CC BY-SA 2.0
• Duntrune CastlePatrick Mackie, CC BY-SA 2.0
• Duntulm CastleOtter, CC BY-SA 3.0
• Dunure CastleJohn McLeish, CC BY-SA 2.0
• Dunvegan CastleOtter, CC BY-SA 3.0
• Dunyvaig CastleAlasdair MacNeill, CC BY-SA 2.0
• Dupplin CastleNinian Reid from Perth, Scotland, CC BY 2.0
• Durham CastleCarla Brain, CC BY-SA 2.0
• Durhamstown CastleGarry Dickinson, CC BY-SA 2.0
• Durris CastleAlan Findlay, CC BY-SA 2.0
• Dysart CastleKieran Campbell, CC BY-SA 2.0
• Earl's Palace, BirsayVan de Beek at nl.wikipedia, CC BY-SA 3.0
• Earl's Palace, KirkwallVan de Beek at nl.wikipedia, CC BY-SA 3.0
• Earlstoun CastleGirth Summit, CC BY-SA 4.0
• East Orchard CastleBen Salter from Wales, CC BY 2.0
• Eastcotts CastleJeff Tomlinson, CC BY-SA 2.0
• Eaton Socon CastleChris Jefferies., CC BY-SA 2.0
• Eccleshall CastleJohn Buckler, Public domain
• Edburton Castle RingSimon Carey, CC BY-SA 2.0
• Eden CastleDavid Hawgood, CC BY-SA 2.0
• Edinample CastleGordon Hatton, CC BY-SA 2.0
• Edinburgh CastleStephencdickson, CC BY-SA 4.0
• Edingham CastleColin Kinnear, CC BY-SA 2.0
• Edlingham CastleUser Tagishsimon on en.wikipedia, CC BY-SA 3.0
• Edmond CastleCharles Greenwood or Frederick Peake, Public domain
• Edzell CastleAnne Burgess, CC BY-SA 2.0
• Eglinton CastleRosser1954 at English Wikipedia, Public domain
• Egremont CastlePaul Lakin, CC BY 3.0
• Eilean Donan CastleW. Bulach, CC BY-SA 4.0
• Elcho CastleSlink pink at English Wikipedia, Public domain
• Elgin CastleLucas Kendall, CC BY-SA 4.0
• Elibank CastleRichard Webb, CC BY-SA 2.0
• Ellesmere CastleJeff Buck, CC BY-SA 2.0
• Elmley CastlePhilip Halling, CC BY-SA 2.0
• Elphinstone TowerBubobubo2, CC BY-SA 3.0
• Elphinstone Towerkim traynor, CC BY-SA 2.0
• Elsdon CastleAndrew Curtis, CC BY-SA 2.0
• Elsdon TowerPhil Thirkell, CC BY-SA 2.0
• Elvaston CastleChris J Dixon, CC BY-SA 2.0
• Ely CastleChris Gunns, CC BY-SA 2.0
• Embleton TowerAlexander P Kapp, CC BY-SA 2.0
• English Bicknor CastleDave.Dunford, CC BY-SA 4.0
• Enniscorthy CastleMikeWest Wexford, CC BY-SA 4.0
• Enniskillen CastleRaymond Millar, CC BY-SA 2.0
• Erchless CastleCraig Wallace, CC BY-SA 2.0
• Esslemont CastleRethought, CC BY-SA 3.0
• Ethie CastleAnne Burgess, CC BY-SA 2.0
• Evelaw TowerJohn Whelan, CC BY-SA 2.0
• Ewloe CastleLlywelyn2000, CC BY-SA 4.0
• Ewyas Harold CastlePhilip Halling, CC BY-SA 2.0
• Eye CastleBob Jones, CC BY-SA 2.0
• Eynsford CastleRichard Nevell from London, United Kingdom, CC BY-SA 2.0
• Fa'side CastleGreigBrash, CC BY-SA 3.0
• Fairburn TowerKognos, CC BY-SA 4.0
• Fairlie CastleRosser1954, CC BY-SA 4.0
• Falkland PalaceSam Styles, CC BY-SA 2.0
• Fanning's CastleGilPe, CC BY-SA 4.0
• Farleigh Hungerford Castlenicksarebi, CC BY 2.0
• Farnham CastleLewis Hulbert, CC BY-SA 3.0
• Fast CastleBubobubo2, CC BY-SA 3.0
• Fatlips CastleSteelecf - Please Credit Danielle Steele for Photo, CC BY-SA 3.0
• Feartagar CastleMike Searle, CC BY-SA 2.0
• Featherstone CastleMargaret Clough, CC BY-SA 2.0
• Fedderate CastleRichard Webb, CC BY-SA 2.0
• Fenny CastleSheila Russell, CC BY-SA 2.0
• Fenton TowerLisa Jarvis, CC BY-SA 2.0
• Fernie CastleSimon Johnston, CC BY-SA 2.0
• Ferniehirst CastleVictuallers, CC BY-SA 4.0
• Fetteresso CastleC Michael Hogan, CC BY-SA 2.0
• Fetternear PalaceC Michael Hogan, CC BY-SA 2.0
• Fiddaun CastleLeomyhero at English Wikipedia, CC BY-SA 3.0
• Finavon CastleAlan Thomson, CC BY-SA 2.0
• Fincharn CastlePatrick Mackie, CC BY-SA 2.0
• Findlater CastleIngo Wölbern, Public domain
• Findochty CastleTintwistedgrills, CC BY-SA 4.0
• Fingask CastleTom Pennington, CC BY-SA 2.0
• FinlagganOtter, CC BY-SA 3.0
• Finlarig CastleIain Lees, CC BY-SA 2.0
• Fintry CastleRobert Murray, CC BY-SA 2.0
• FitzHarris CastleAttributed in the journal to Sir Charles Corkran (1872-1939), Public domain
• Flamborough CastleAlan Walker, CC BY-SA 2.0
• Flint CastleLesbardd, CC BY-SA 3.0
• Flitwick CastleMalcolm Butler, CC BY-SA 4.0
• Floors CastleHogweard, Public domain
• Folkestone CastleAlfred Gay at English Wikipedia, CC BY-SA 3.0
• Folkingham CastleBob Harvey, CC BY-SA 2.0
• Fonmon CastleStewart Black from British Isles, CC BY 2.0
• Ford CastleLisa Jarvis, CC BY-SA 2.0
• Fordell Castlekim traynor, CC BY-SA 2.0
• Fordyce CastleDominic Moore, CC BY-SA 2.0
• Forse CastlePeter Gamble, CC BY-SA 2.0
• Forter CastleMike Pennington, CC BY-SA 2.0
• Fotheringhay CastleIain Simpson, CC BY-SA 2.0
• Foulis CastleKing-of-no-pants at English Wikipedia, CC BY-SA 3.0
• Foulksrath CastleUser Postdlf on en.wikipedia, CC BY-SA 3.0
• Fowlis CastleDouglas Nelson, CC BY-SA 2.0
• Framlingham CastleHappy Bean Photography, CC BY-SA 4.0
• Friars CarseRosser1954 Roger Griffith, Public domain
• Frodsham CastleBuck Brothers, Public domain
• Fulton TowerWalter Baxter, CC BY-SA 2.0
• Fyvie CastleTechsp64, CC BY-SA 4.0
• Gadgirth Old Ha'Rosser1954, CC BY-SA 4.0
• Galdenoch CastleMary and Angus Hogg, CC BY-SA 2.0
• Gallarus CastleBoston at English Wikipedia, Public domain
• Gamelshiel CastleChris Eilbeck, CC BY-SA 2.0
• Garbally CastleMike Searle, CC BY-SA 2.0
• Gardyne CastleWilliam Muir, CC BY-SA 2.0
• Garth CastleCallum Black, CC BY-SA 2.0
• Gelston CastleTom Parnell, CC BY-SA 4.0
• GightPeter Ward, CC BY-SA 2.0
• Gilbertfield CastleTaken by User:Supergolden, CC BY-SA 3.0
• Gilling CastleUnknown authorUnknown author, Public domain
• Gilnockie TowerFarmer erik at English Wikipedia, Public domain
• Glamis CastleWorldfootage, CC BY-SA 4.0
• Gleaston CastleChas Hollwey, CC BY-SA 4.0
• Glenarm CastleGlenarmCastle, CC BY-SA 3.0
• Glenbuchat CastleStanley Howe, CC BY-SA 2.0
• Glengarnock CastleRosser1954 Roger Griffith, Public domain
• Glengorm CastleRob Farrow, CC BY-SA 2.0
• Gleninagh CastlePDphoto.org, Public domain
• Glenquin CastleMike Searle, CC BY-SA 2.0
• Glenveagh CastleIan Edwards, CC BY-SA 2.0
• Glinsk CastleHyacinth45 at English Wikipedia, CC BY-SA 3.0
• Glossop CastleBob Harvey, CC BY-SA 2.0
• Gloucester CastleWilliam Andrew (1848-1908), Public domain
• Goodrich Castlekitmasterbloke, CC BY 2.0
• Goodrich CourtThomas Roscoe and Charles Meredith, Public domain
• Gordon CastleAnne Burgess, CC BY-SA 2.0
• Gorteens CastleBlimey74 (talk) (Uploads) /, CC0
• Gosford CastleKip471, Public domain
• Gowran Castleliam murphy, CC BY-SA 2.0
• Grallagh CastleMike Searle, CC BY-SA 2.0
• Granard MotteSmcq, CC BY-SA 3.0
• Grandtully CastleElliott Simpson, CC BY-SA 2.0
• Grange CastleDouglas P.Bermingham, CC BY-SA 3.0
• Granuaile's CastleSteve Edge, CC BY-SA 2.0
• Great Ashfield CastleSteve Blake, CC BY-SA 2.0
• Great Canfield CastleAcabashi, CC BY-SA 4.0
• Greenan Castlewfmillar, CC BY-SA 2.0
• GreencastleJames Edgar, CC BY-SA 2.0
• Greenhalgh CastleDr Greg, CC BY-SA 3.0
• Greenknowe TowerTaken by user:Supergolden, CC BY-SA 3.0
• Greenwich CastleInternet Archive Book Images, No restrictions
• Gregans CastleDrow69, CC BY-SA 4.0
• Gresham CastleStavros1, CC BY 3.0
• Greys CourtDennis Jackson, CC BY-SA 2.0
• Greystoke CastleSimon Ledingham, CC BY-SA 2.0
• Groby CastleCharles Wall, Public domain
• Grosmont CastleRobert Cutts from Bristol, England, UK, CC BY 2.0
• Guildford CastleSuzanneKn at English Wikipedia, Public domain
• Guthrie CastleDominic Dawn Harry and Jacob Paterson, CC BY-SA 2.0
• Gwrych CastleLlywelyn2000, CC BY-SA 4.0
• Gwydir CastleTom Parnell, CC BY-SA 4.0
• Gylen CastleMacsels, CC BY-SA 3.0
• Hadleigh CastleJohnArmagh, Public domain
• Haggerston Castlewfmillar, CC BY-SA 2.0
• Haggs CastleAlexander Duff Robertson, Public domain
• Hailes CastleAlastair Seagroatt, CC BY-SA 2.0
• Hailes Castleneil hanson, CC BY-SA 2.0
• Haining Place and the Barony of Haining-RossRosser1954, CC BY-SA 4.0
• Hales CastleHchc2009, CC BY-SA 3.0
• Halkyn CastleWestall, William, 1781-1850, lithographer. Buckler, John, 1770-1851, artist., Public domain
• Hallaton CastleTim Heaton, CC BY-SA 2.0
• Hallforest CastleAndrew Wood, CC BY-SA 2.0
• Hallyards CastleRichard Webb, CC BY-SA 2.0
• Halton CastleRept0n1x, CC BY-SA 3.0
• Halton CastleRHaworth, CC BY 2.5
• Ham CastleRichard Greenwood, CC BY-SA 2.0
• Hampstead Norreys CastleSteve Matthews, CC BY-SA 2.0
• Hampton Court Castleoriginal: Tony Bailey first derivation: Sir Gawain second derivation: Paravane (talk), CC BY-SA 2.0
• Hanley CastleBob Embleton, CC BY-SA 2.0
• Harbottle CastleWorldfootage, CC BY-SA 4.0
• Harewood CastleTJ Blackwell, CC BY-SA 3.0
• Harlech CastleLlywelyn2000, CC BY-SA 4.0
• Harlsey CastleMick Garratt, CC BY-SA 2.0
• Harry Avery's CastleKenneth Allen, CC BY-SA 2.0
• Harthill CastleAnn Harrison, CC BY-SA 2.0
• Hartlebury CastleStephen McKay, CC BY-SA 2.0
• Hartley CastleStephen Craven https://www.geograph.org.uk/profile/6597, CC BY-SA 2.0
• Hartshill CastleBrett Lees-Smith from Nuneaton, Warwickshire,, United Kingdom, CC BY-SA 2.0
• Hastings CastleKreepin Deth, CC BY-SA 3.0
• Hatton CastleDes Colhoun, CC BY-SA 2.0
• Hatton CastleHicabuffy, CC BY-SA 3.0
• Haughley CastleAndrew Hill, CC BY-SA 2.0
• Haughton CastleElwood, CC BY-SA 2.0
• Haverfordwest CastleCered, CC BY-SA 2.0
• Haw HillSimon Cobb, CC0
• Hawarden CastleRept0n1x, CC BY-SA 3.0
• Hawthornden CastleGeorge Washington Wilson, Public domain
• Hay CastlePhilip Halling, CC BY-SA 2.0
• Hayton CastleBelinda E Wroe, CC BY 2.0
• Hazlewood CastleDAVID M GOODWIN, CC BY-SA 2.0
• Hedingham CastleAgnete, Public domain
• Heighley CastlePeter Styles, CC BY-SA 2.0
• Helmsley CastlePhotograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0
• Helston CastleTim Green from Bradford, CC BY 2.0
• Hemyock Castledon cload, CC BY-SA 2.0
• Hen DomenRichard Law, CC BY-SA 2.0
• Henderskelfe CastleNicholas Hawksmoor (c.1661-1736), Public domain
• Herdmanston HouseUK Ordnance Survey, Public domain
• Hereford CastleDavid Stowell, CC BY-SA 2.0
• Hermitage CastleKirsty Smith, CC BY-SA 2.0
• Herstmonceux CastleThe original uploader was Welshie at English Wikipedia., CC BY-SA 3.0
• Hertford CastleCaitlin from Hertfordshire, UK, CC BY 2.0
• HessilheadThe original uploader was Rosser1954 at English Wikipedia., Public domain
• Hever CastleNigel Lamb, CC BY 2.0
• Hewelsfield MotteTopo122, CC BY-SA 4.0
• High Head CastleWlavender@hotmail.com at English Wikipedia, Public domain
• Highcliffe CastleDave Pape, Public domain
• Hilfield CastleJohn Goodall, CC BY-SA 2.0
• Hill of Beith CastleRosser1954 Roger Griffith, Public domain
• Hillsborough CastleKenneth Allen, CC BY-SA 2.0
• Hoddom CastleMike and Kirsty Grundy, CC BY-SA 2.0
• Holt CastlePeter Craine, CC BY-SA 2.0
• Holt CastlePeter Whatley, CC BY-SA 2.0
• Hope CastleDean Molyneaux, CC BY-SA 2.0
• Hopton CastleOstrich, CC BY-SA 3.0
• Hornby CastleAndy Hawkins from Scotland, CC BY-SA 2.0
• Hornby CastleStephen George-Powell, CC BY 2.0
• Horsburgh CastleWalter Baxter, CC BY-SA 2.0
• Horsford CastleAshley Dace, CC BY-SA 2.0
• Horston CastleCirrus9 at English Wikipedia, Public domain
• Howth CastleO'Dea, CC BY-SA 4.0
• Hume Castlejames denham, CC BY-SA 2.0
• Humewood CastleBook authored by Charles Eastlake - the engraver is not attributed, Public domain
• Hunterston CastleThe original uploader was Dreamer84 at English Wikipedia., CC BY 2.5
• Huntingdon CastleDuncan Grey, CC BY-SA 2.0
• Huntington CastleLucy Sheers, CC BY-SA 4.0
• Huntington CastleLiam Hughes from Milwaukee, WI, USA, CC BY 2.0
• Huntingtower CastleBubobubo2, CC BY-SA 3.0
• Huntly CastleRosser1954, CC BY-SA 4.0
• Huntsham CastleUser:Trotboy, Public domain
• Hutton CastleIain Thompson, CC BY-SA 2.0
• Hutton in the ForestMdbeckwith, CC BY 3.0
• Hylton CastleCraigy (talk), CC BY-SA 3.0
• Illieston HouseAllie_Caulfield, CC BY 2.0
• Inch CastleAlistair Cunningham, CC BY 3.0
• Inchdrewer CastleRichard Paxman, CC BY-SA 2.0
• Inglismaldie CastleInternet Archive Book Images, No restrictions
• Innerwick CastleCallum Black, CC BY-SA 2.0
• Innes Chonnel CastleBrian D Osborne, CC BY-SA 2.0
• Inverallochy CastleStanley Howe, CC BY-SA 2.0
• Invercauld CastleRoger Griffith - unknown original author, Public domain
• Invergarry Castleronnie leask, CC BY-SA 2.0
• Inverlochy CastleOehoe at Dutch Wikipedia (Original text: Van de Beek), CC BY-SA 3.0
• Inverlochy Castle HotelJohnny Durnan, CC BY-SA 2.0
• Invermark CastleNick, CC BY-SA 4.0
• Inverness CastleDiliff, CC BY-SA 3.0
• Inverquharity CastleTom Pennington, CC BY-SA 2.0
• Inverugie CastleDavid Purchase, CC BY-SA 2.0
• Isert Kelly CastleMike Searle, CC BY-SA 2.0
• Isle TowerSimon Lidwell, CC BY-SA 2.0
• Jedburgh CastleWalter Baxter, CC BY-SA 2.0
• Jigginstown CastleWanfried-Dublin, CC BY-SA 4.0
• John O'Gaunt's CastleMick Melvin, CC BY-SA 2.0
• Johnstone Castlewfmillar, CC BY-SA 2.0
• Johnstown CastleDavid Hawgood, CC BY-SA 2.0
• Jordan's CastleAubrey Dale, CC BY-SA 2.0
• Kames CastleRichard Dear, CC BY-SA 2.0
• Keiss CastleBill Henderson, CC BY-SA 2.0
• Keith MarischalMiles Kerr-Peterson, CC BY-SA 4.0
• Kelburn Castlewfmillar, CC BY-SA 2.0
• Kellie CastleMaggieMayRose, CC BY-SA 3.0
• Kells CastleCharles Vallancey, Rev Joseph Turner (Life time: died 1812 / 1835), Public domain
• Kelspoke CastleLeslie Barrie, CC BY-SA 2.0
• Kendal CastleTom Richardson, CC BY-SA 2.0
• Kenfig CastleHywel Williams, CC BY-SA 2.0
• Kenilworth CastleDeFacto, CC BY-SA 4.0
• Kenmure CastleTom Parnell, CC BY-SA 4.0
• Kerelaw CastleRosser1954 - Roger Griffith, Public domain
• Kerse CastleRosser1954, CC BY-SA 3.0
• Kidwelly CastleIphrit, CC BY-SA 3.0
• Kilberry CastleAnne Burgess, CC BY-SA 2.0
• Kilbline CastlePaddy O'Shea, Public domain
• Kilbolane CastleMike Searle, CC BY-SA 2.0
• Kilbryde CastleInternet Archive Book Images, No restrictions
• Kilcash CastleMike Searle, CC BY-SA 2.0
• Kilchrist Castlechris kamper, CC BY-SA 2.0
• Kilchurn CastleMike Searle, CC BY-SA 2.0
• Kilclief CastleAubrey Dale, CC BY-SA 2.0
• Kilcoe CastleMike Searle, CC BY-SA 2.0
• Kilcolman CastleMike Searle, CC BY-SA 2.0
• Kilcoy CastleWebrazor, CC BY-SA 4.0
• Kilcrea CastleRichard Fensome, CC BY-SA 2.0
• Kildare CastleWilliam Murphy, CC BY-SA 2.0
• Kildonan CastleVincent van Zeijst, CC BY-SA 3.0
• Kildrummy CastleVan de Beek, CC BY-SA 3.0
• Kilgobbin CastleGabriel Beranger (ca.1729-1817), Public domain
• Kilkea CastleGsmithEIDW, CC BY-SA 3.0
• Kilkenny CastleNo machine-readable author provided. Tolivero~commonswiki assumed (based on copyright claims)., Public domain
• Kilkerran CastleMary and Angus Hogg, CC BY-SA 2.0
• Killahara CastlePerseidsGirl, CC BY-SA 3.0
• Killeavy CastleRoss, CC BY-SA 2.0
• Killeen CastleIrimurz, CC BY-SA 4.0
• Killiney CastleDublin Penny Journal, Public domain
• Killua CastleGavigan 01 at English Wikipedia, CC BY-SA 3.0
• Killyleagh CastlePeter Clarke (talk) Original uploader was Peter Clarke at en.wikipedia, CC BY-SA 3.0
• Kilmahew CastleLeeNapier at English Wikipedia, Public domain
• Kilmartin CastlePatrick Mackie, CC BY-SA 2.0
• Kilmaurs CastleRosser1954, CC BY-SA 4.0
• Kilmory CastleJohn Ferguson, CC BY-SA 2.0
• Kilravock CastleWojsyl, CC BY-SA 3.0
• Kilspindie Castlestephen samson, CC BY-SA 2.0
• Kiltartan Castledougf, CC BY-SA 2.0
• Kilton CastleMick Garratt, CC BY-SA 2.0
• Kimbolton CastleGraham Taylor, CC BY-SA 2.0
• Kinbane CastleBob Embleton, CC BY-SA 2.0
• Kindlestown CastleAoifer, CC BY-SA 4.0
• Kindrochit CastleTheCreator, Public domain
• Kinfauns CastleKaren Vernon, CC BY-SA 2.0
• King Charles's CastleAndrew Abbott, https://www.geograph.org.uk/profile/45714, CC BY-SA 2.0
• King John's CastleMike Shinners, CC BY-SA 2.0
• King John's Castlejai, CC BY-SA 2.0
• King John's CastleThe Speckled Bird, CC BY-SA 4.0
• King John's PalaceKisha Tracy, CC BY-SA 4.0
• King's CastleArdfern, CC BY-SA 3.0
• Kingencleugh CastleRosser1954, CC BY-SA 3.0
• Kingswear CastleNilfanion, CC BY-SA 3.0
• Kinkell CastleRichard Dorrell, CC BY-SA 2.0
• Kinlochaline CastleL J Cunningham, CC BY-SA 2.0
• Kinlough CastleMike Searle, CC BY-SA 2.0
• Kinnaird CastleGeorge Washington Wilson, Public domain
• Kinnairdy CastleAnn Harrison, CC BY-SA 2.0
• Kinneil HouseTom Sargent, CC BY-SA 2.0
• Kinnersley CastlePhilip Pankhurst, CC BY-SA 2.0
• Kirby Muxloe Castleen:User:Neddyseagoon, CC BY-SA 3.0
• Kirkhope TowerJonathan Oldenbuck, CC BY-SA 4.0
• Kirkistown CastleAubrey Dale, CC BY-SA 2.0
• Kirkoswald CastleThe Library of Congress, No restrictions
• Kirtling TowerHugh Venables, CC BY-SA 2.0
• Kisimul CastleOtter, CC BY-SA 3.0
• Knappogue Castlehttps://www.flickr.com/people/sitomon/, CC BY-SA 2.0
• Knaresborough CastleRedvers, CC BY 2.0
• Knepp CastleRichard Nevell, CC BY-SA 4.0
• Knock CastleWikimedia Commons, CC BY-SA 3.0
• Knock Castlewfmillar, CC BY-SA 2.0
• Knock CastleJames Giles, Public domain
• Knockhall CastleIan Cleland, CC BY-SA 2.0
• Kyle CastleRosser1954, CC BY-SA 4.0
• Lackeen CastleMike Searle, CC BY-SA 2.0
• Lambton CastleWikimedia Commons, Public domain
• Lammerside CastleDavid Brown, CC BY-SA 2.0
• Lancaster CastleThe wub, CC BY-SA 4.0
• Landguard FortColin Park, CC BY-SA 2.0
• Lands of LainshawRosser1954 at en.wikipedia, Public domain
• Langley CastleKen Brown, CC BY-SA 2.0
• Lanton TowerAstrid H, CC BY-SA 2.0
• Laugharne CastleGarth Newton, CC BY-SA 2.0
• Launceston CastleChris Shaw, CC BY-SA 2.0
• Lauriston CastleUser:Supergolden, CC BY-SA 3.0
• Lavendon CastleNigel Stickells, CC BY-SA 2.0
• Law CastleDavid Neale, CC BY-SA 2.0
• Laxton CastleRobert Goulden, CC BY-SA 2.0
• Lea CastleMike Searle, CC BY-SA 2.0
• Leamaneh CastleSteve Ford Elliott, CC BY 2.0
• Leap CastleMike Searle, CC BY-SA 2.0
• Leeds CastleMisterzee, CC BY 3.0
• Lefnoreis CastleRosser1954, CC BY-SA 4.0
• Leicester CastleKris1973, CC BY-SA 4.0
• Leighlinbridge CastleSarah777, Public domain
• Lennox CastleRon Shephard, CC BY-SA 2.0
• Lescudjack Hill FortMalcolm Kewn, CC BY-SA 2.0
• Leslie CastleColin Smith, CC BY-SA 2.0
• Leuchars CastleKim Traynor, CC BY-SA 3.0
• Lewes CastleArild Vågen, CC BY-SA 4.0
• Leybourne CastleGlen, CC BY 2.0
• Liberton TowerMrabbits at English Wikipedia, Public domain
• Lickleyhead CastleStanley Howe, CC BY-SA 2.0
• Liddel CastleWalter Baxter, CC BY-SA 2.0
• Liddel StrengthHoward Mattinson, CC BY-SA 2.0
• Lidgate CastleBob Jones, CC BY-SA 2.0
• Lincoln CastleDmitrij M, CC BY 3.0
• Lindisfarne Castlematthew Hunt, CC BY 2.0
• Linlithgow PalaceAlex Sanz, CC BY 2.0
• Liscarroll CastleMike Searle, CC BY-SA 2.0
• Lisheen CastleGarry Dickinson, CC BY-SA 2.0
• Liskeard CastleHumphrey Bolton, CC BY-SA 2.0
• Lismore CastleIngo Mehling, CC BY-SA 3.0
• Listowel CastleNo machine-readable author provided. Larsoner~commonswiki assumed (based on copyright claims)., Public domain
• Little Cumbrae CastleEddie Dowds, CC BY-SA 2.0
• Llancaiach FawrRose Cottage, Public domain
• Llandough CastleFruitMonkey, CC BY-SA 3.0
• Llandovery CastleStuart Logan, CC BY-SA 2.0
• Llangynwyd CastleFruitMonkey, CC BY-SA 4.0
• Llansteffan CastleEmperorzurg123, CC BY-SA 4.0
• Llanthomas Castle MoundLiamGM, CC BY-SA 4.0
• Llantrisant CastleFruitMonkey (talk), CC BY-SA 3.0
• Llawhaden CastleLiamohara at English Wikipedia, CC BY 2.5
• Loch Doon CastlePaul Collins, CC BY-SA 2.0
• Loch Gorm CastleMary and Angus Hogg, CC BY-SA 2.0
• Loch Slin CastleWilliam Fraser (18 February 1816 – 13 March 1898), Public domain
• Lochhouse TowerRichard Webb, CC BY-SA 2.0
• Lochleven CastleOtter, CC BY-SA 3.0
• Lochmaben CastleOtter, CC BY-SA 3.0
• Lochnaw CastleSir Andrew Agnew, Bart. of Lochnaw, Public domain
• Lochore CastleInternet Archive Book Images, Public domain
• Lochranza CastlePhotograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0
• Locking CastleAdrian and Janet Quantock, CC BY-SA 2.0
• Longtown CastleGeorge Evans, CC BY-SA 2.0
• Lordscairnie CastleJim Bain, CC BY-SA 2.0
• Lost Gardens of HeliganWikimedia Commons, CC BY-SA 3.0
• Lough Cutra CastleNational Library of Ireland on The Commons, No restrictions
• Lough Rynn CastleDáibhí Ó Bruadair, CC BY-SA 3.0
• Loughmoe CastleRigger30, Public domain
• Loughor CastleNigel Davies, CC BY-SA 2.0
• Loup HouseMary and Angus Hogg, CC BY-SA 2.0
• Lowther CastleBurtonsi, CC BY-SA 4.0
• Ludgershall CastleAde Sims, CC BY-SA 4.0
• Ludlow CastleIan Capper, CC BY-SA 2.0
• Luffness CastleJim Barton, CC BY-SA 2.0
• Lullingstone CastleJim Osley, CC BY-SA 2.0
• Lumley CastleBill Henderson, CC BY-SA 2.0
• Luttrellstown CastleThe British Library, No restrictions
• Lydford CastleSteinsky, CC BY-SA 1.0
• Lympne CastleRobin Webster, CC BY-SA 2.0
• Macduff's CastleDougRM, CC BY-SA 4.0
• Mackworth CastleStephen G Taylor, CC BY-SA 2.0
• Macroom CastleMith, CC BY-SA 3.0
• Madeley Old ManorDavid Burrows, CC BY-SA 3.0
• Mahee CastleArdfern, CC BY-SA 3.0
• Mains CastleYdam, CC BY-SA 3.0
• Mains CastleJohn McLeish, CC BY-SA 2.0
• Malahide CastleWilliam Murphy from Dublin, Ireland, CC BY-SA 2.0
• Mallow CastleMike Searle, CC BY-SA 2.0
• Malton CastleJohn Sparshatt, CC BY-SA 2.0
• Manchester CastleSam Moorhouse from Manchester, CC BY-SA 2.0
• Manderley CastleSergio, CC BY 2.0
• Mangerton TowerWalter Baxter, CC BY-SA 2.0
• Mannan CastleKieran Campbell, CC BY-SA 2.0
• Manorbier CastleTony Grant, CC BY-SA 2.0
• Mar's CastleGeorge Gordon Burr, Public domain
• Margam CastleRobert Davies, CC BY-SA 2.0
• Margaret's CastleArdfern, CC BY-SA 3.0
• Markree CastleSE Keenan, CC BY-SA 4.0
• Marlborough CastleWikimedia Commons, Public domain
• Martinstown CastleMike Searle, CC BY-SA 2.0
• MathrafalWelshficwitch, CC BY-SA 3.0
• Mauchline CastleRoger Griffith, Public domain
• Maudlin CastleJohn Stephen Reid, CC BY-SA 4.0
• Maxstoke CastleSteve Wilson from Marchwood, The New Forest, UK, CC BY 2.0
• Maybole CastleMary and Angus Hogg, CC BY-SA 2.0
• Maynooth CastleWilliam Murphy from Dublin, Ireland, CC BY-SA 2.0
• McDermott's CastleCarlo Cretaro from Ireland, CC BY 2.0
• Mearns Castlewrobison, CC BY-SA 2.0
• Meggernie CastleThomas Hosmer Shepherd, Public domain
• Megginch CastleJames Allan, CC BY-SA 2.0
• Melbourne CastleUnknown authorUnknown author, Public domain
• Melgund CastleAnne Burgess, CC BY-SA 2.0
• Mellerstain HouseSteve Kent, CC BY-SA 2.0
• Menlo CastleMike Searle, CC BY-SA 2.0
• Merchiston TowerKim Traynor, CC BY-SA 3.0
• Merdon CastleJon S, CC BY-SA 2.0
• Merlinpark Castledougf, CC BY-SA 2.0
• Methven CastleArthur Bruce, CC BY-SA 2.0
• Mettingham CastleGraham Horn, CC BY-SA 2.0
• Middleham CastleCJW, Attribution
• Middleton MountMartin Pearman, CC BY-SA 2.0
• Midford Castlechris hayes, CC BY-SA 2.0
• Midhope CastleCamer01, CC BY-SA 3.0
• Midmar CastleColin Smith, CC BY-SA 2.0
• Millmount FortCianwal, CC BY-SA 4.0
• Millom CastleAndrew Woodhall, CC BY-SA 2.0
• Milton TowerAnn Harrison, CC BY-SA 2.0
• Minard CastleWendy Kirkwood, CC BY-SA 2.0
• Mingary CastleJon Haylett, CC BY-SA 3.0
• Miserden CastleHchc2009, CC BY-SA 3.0
• Mitchelstown CastleJohn Preston Neale, Public domain
• Mitford CastlePat Pierpoint, CC BY-SA 2.0
• Mold CastleLlywelyn2000, CC BY-SA 4.0
• Monea castleKenneth Allen, CC BY-SA 2.0
• Mongavlin Castle60McCurdy, CC BY-SA 3.0
• Moniack CastleDave Napier, CC BY-SA 2.0
• Monivea CastleMikeconneely, CC BY-SA 4.0
• Monmouth CastlePauline Eccles, CC BY-SA 2.0
• Monnow BridgeBob Crowther, CC BY 2.0
• Montacute CastleStMichaels_Hill_Montacute_Somerset_Map.jpg: Editor - W.Page; Chapter on Ancient Earthworks - C.H.Bothamley derivative work: Hchc2009 (talk), Public domain
• Montfichet's TowerSchlaier, Public domain
• Montfode CastleJames Paterson, Public domain
• Montgomery CastleStoker243, CC BY-SA 3.0
• Monzie CastleEleanor Miller, CC BY-SA 2.0
• Moorish CastleJames Cridland from London, UK, CC BY 2.0
• Moorstown CastleMike Searle, CC BY-SA 2.0
• Moot Hall, MaldonBasher Eyre, CC BY-SA 2.0
• Moreton Corbet CastleJohn H Darch, CC BY-SA 2.0
• Morganstown Castle MoundSeth Whales, CC BY-SA 4.0
• Morgraig CastleJohn Lord, CC BY-SA 2.0
• Morlais CastleGibbinskaren, CC BY-SA 4.0
• Morley Old HallJohn Fielding from Norwich, UK, CC BY 2.0
• Morpeth CastleC G Burke, CC BY-SA 2.0
• Mortimer's CastleRev William Falkiner (Life time: d 1910), Public domain
• Morton CastleBubobubo2, CC BY-SA 3.0
• Motte of UrrRoger Griffith, Public domain
• Mounie CastleGreg Stringham, CC BY-SA 2.0
• Mountjoy CastleJames1652 at English Wikipedia, Public domain
• Mow Cop CastleNmwatson, Public domain
• Moy Castles allison, CC BY-SA 2.0
• Moycarkey CastleMike Searle, CC BY-SA 2.0
• Moydrum CastleWikimedia Commons, CC BY-SA 3.0
• Moynes CourtWikimedia Commons, Public domain
• Moyry CastleRon Murray, CC BY-SA 2.0
• Muchalls CastleAnlace at English Wikipedia, Public domain
• Muckrach CastleDorothy Carse, CC BY-SA 2.0
• Mugdock CastleXenophule, CC BY-SA 4.0
• Mulgrave CastleStephen Horncastle, CC BY-SA 2.0
• Muncaster CastleLilyPadFrog, CC BY-SA 4.0
• Muness CastleVan de Beek, CC BY-SA 3.0
• Murieston CastleColdupnorth, CC BY-SA 4.0
• Myres CastleC Michael Hogan, CC BY-SA 2.0
• Nantcribba CastleVize, Public domain
• Nantwich CastleAndy and Hilary, CC BY-SA 2.0
• Narberth CastleWestWalesP, CC BY-SA 3.0
• Narrow Water CastleWilson Adams, CC BY-SA 2.0
• Naworth CastlePeter McDermott, CC BY-SA 2.0
• Neath CastleDarren Wyn Rees at Aberdare Blog, CC BY 3.0
• NecarneKenneth Allen, CC BY-SA 2.0
• Neidpath CastleElliott Simpson, CC BY-SA 2.0
• Nether Horsburgh CastleCamer01, CC BY-SA 3.0
• Netley CastleNilfanion, CC BY-SA 3.0
• New Slains CastleColin Smith, CC BY-SA 2.0
• Newark CastleNo machine-readable author provided. Dave souza assumed (based on copyright claims)., CC BY-SA 2.5
• Newark CastleDavid Ingham from Lancashire, England, CC BY-SA 2.0
• Newark CastleNick J Bibby, CC BY-SA 4.0
• Newark CastleWalter Baxter, CC BY-SA 2.0
• Newbridge DemesneAdc88 at en.wikipedia, CC0
• Newbyres CastleHoris, CC BY-SA 4.0
• Newcastle CastleAlan Hughes, CC BY-SA 2.0
• Newcastle Emlyn CastleSteve Chapple, CC BY-SA 2.0
• Newcastle-under-Lyme CastleJonathan Hutchins, CC BY-SA 2.0
• Newmilns TowerRosser1954, CC BY-SA 4.0
• Newmore CastleQuintusPetillius, Public domain
• Newport CastleThe original uploader was Owain at English Wikipedia., CC BY-SA 2.5
• Newport Castleceridwen, CC BY-SA 2.0
• Newton CastleOdysseus1479, CC BY-SA 3.0
• Newton St Loe CastleRwendland, CC BY-SA 3.0
• Newtown Castlelaura ammons, CC BY-SA 2.0
• Niddry CastleDonald MacDonald, CC BY-SA 2.0
• Nisbet HouseRichard Webb, CC BY-SA 2.0
• Noltland CastleOtter, CC BY-SA 3.0
• Norham CastleMartin Norman, CC BY-SA 2.0
• North Elmham CastleEvelyn Simak, CC BY-SA 2.0
• North West CastleR lee, CC BY-SA 2.0
• Northallerton CastleBob Embleton, CC BY-SA 2.0
• Northampton CastleC. H. Hartshorne, Public domain
• Northborough Manor HouseAlan Murray-Rust, CC BY-SA 2.0
• Northburgh CastleAndreas F. Borchert, CC BY-SA 4.0
• Norwich CastleThe original uploader was Bluemoose at English Wikipedia., CC BY-SA 3.0
• Nottingham CastleCosmicutencil, CC0
• Nunney CastleMike Searle, CC BY-SA 2.0
• O'Dea CastleOdea at English Wikipedia, Public domain
• Oakham CastleSimon Garbutt. SiGarb 21:25, 12 November 2006 (UTC), CC BY-SA 3.0
• Ochiltree CastleRosser1954, CC BY-SA 4.0
• Odell CastleWikimedia Commons, Public domain
• Odiham CastleBabelStone, CC BY-SA 3.0
• Ogle CastlePat Pierpoint, CC BY-SA 2.0
• Ogmore CastleEwan Topping from Amsterdam, Netherlands, CC BY 2.0
• Okehampton Castlejohn spivey, CC BY-SA 2.0
• Old Beaupre CastleFruitMonkey (talk), CC BY-SA 3.0
• Old Castle LachlanStaraBlazkova, CC BY-SA 4.0
• Old SarumMARKEDWARDS, CC BY-SA 4.0
• Old Sarum CastleMARKEDWARDS, CC BY-SA 4.0
• Old Slains CastleMartyn Gorman, CC BY-SA 2.0
• Olderfleet CastleKenneth Allen, CC BY-SA 2.0
• Ongar CastleJohn Winfield, CC BY-SA 2.0
• Oola CastleMike Searle, CC BY-SA 2.0
• Oranmore CastleKevinSchnippkoweit, CC BY-SA 4.0
• Orchardton TowerOehoe at Dutch Wikipedia (Original text: Van de Beek), CC BY-SA 3.0
• Orford CastleChris Gunns, CC BY-SA 2.0
• Orielton, PembrokeshirekathrynFSC Orielton, CC BY-SA 2.0
• Ormond CastleNick Forwood, CC BY-SA 2.0
• Ormonde CastleA.-K. D., CC BY-SA 4.0
• Oswestry CastleJaggery, CC BY-SA 2.0
• Owston Ferry CastleAlan Murray-Rust, CC BY-SA 2.0
• Oxenfoord CastleRichard West, CC BY-SA 2.0
• Oxford CastleTejvan Pettinger, CC BY 2.0
• Oxwich CastlePam Brophy, CC BY-SA 2.0
• Oystermouth CastleJennifer Luther Thomas, CC BY-SA 2.0
• Painscastle CastlePhil Laycock, CC BY-SA 2.0
• Pallas CastleMike Searle, CC BY-SA 2.0
• Parham HallThomasCubitt, CC BY-SA 4.0
• Parkavonear CastleBkwillwm, CC BY-SA 3.0
• Parke's CastleJohn Darcy, CC BY-SA 2.0
• Partick CastleAkerbeltz, CC BY-SA 4.0
• Paterchurch TowerUnknown authorUnknown author, OGL v1.0
• Peckforton CastleBs0u10e01, CC BY-SA 3.0
• Peel of LumphananOtter, CC BY-SA 3.0
• Pele TowerRob Farrow, CC BY-SA 2.0
• Pembridge CastlePhilip Halling, CC BY-SA 2.0
• Pembroke CastleMonkeyrustler at English Wikipedia, Public domain
• Pen y BrynLlywelyn2000, CC BY-SA 4.0
• Pencoed CastleBen Salter from Wales, CC BY 2.0
• Pendragon CastleMatthew Hatton, CC BY-SA 2.0
• Penhow CastleBrassknocker, CC BY-SA 4.0
• Penkill CastleAlan Reid, CC BY-SA 2.0
• Penlle'r CastellNigel Davies, CC BY-SA 2.0
• Penllyn CastleMick Lobb, CC BY-SA 2.0
• Penn CastleMike Searle, CC BY-SA 2.0
• Pennard CastleGraham Taylor, CC BY-SA 2.0
• Pennsylvania CastleMike Smith, CC BY-SA 2.0
• Penrhyn CastleLlywelyn2000, CC BY-SA 4.0
• Penrice CastleAlan Richards, CC BY-SA 2.0
• Penrith CastleDavid Rogers, CC BY-SA 2.0
• Penstowe CastleJohn Duncan, CC BY-SA 2.0
• PentillieRod Allday, CC BY-SA 2.0
• Penwortham CastleDevadude2, CC BY-SA 3.0
• Pevensey CastlePiotr Zarobkiewicz, CC BY-SA 3.0
• Peveril CastleDarren Copley from Sheffield, CC BY 2.0
• Pickering CastleMortimerCat, CC BY-SA 3.0
• Picton CastleMorris, Public domain
• Piel CastleArnold Price, CC BY-SA 2.0
• Pilsbury CastleAlan Walker, CC BY-SA 2.0
• Pitfour CastleRob Burke, CC BY-SA 2.0
• Pitlurg CastleAnne Burgess, CC BY-SA 2.0
• Pitsligo CastleSagaciousphil, CC BY-SA 3.0
• Pittarthie CastleJames Allan, CC BY-SA 2.0
• Pittulie CastleDes Colhoun, CC BY-SA 2.0
• Plean CastleDerek Ferris, CC BY-SA 2.0
• Pleshey CastleRichard Nevell from London, United Kingdom, CC BY-SA 2.0
• Plunton CastleRichard Paxman, CC BY-SA 2.0
• Plymouth CastleSmalljim, CC BY-SA 4.0
• Plympton CastleTony Atkin, CC BY-SA 2.0
• Polkelly CastleRosser1954, CC BY-SA 3.0
• Polnoon CastleRosser1954 Roger Griffith, Public domain
• Pontefract CastleWikimedia Commons, Public domain
• Portaferry CastleArdfern, CC BY-SA 3.0
• Portchester CastleMatthew Folley from UK, CC BY 2.0
• Portencross CastleRosser1954, CC BY-SA 3.0
• Porth-Mawr GatehousePeter Glyn, CC BY-SA 3.0
• Portland CastleMark.murphy at English Wikipedia, CC BY-SA 3.0
• Portora CastleKenneth Allen, CC BY-SA 2.0
• Powderham Castleraymond cocks, CC BY 2.0
• Powis CastleAlexander Forst-Rakoczy, CC BY-SA 2.0 at
• Prestatyn CastleJeff Buck, CC BY-SA 2.0
• Preston TowerOtter, CC BY-SA 3.0
• Proncy Castlevalenta, CC BY-SA 2.0
• Prudhoe CastleChris Tweedy, CC BY-SA 2.0
• Pulford CastleJohn S Turner, CC BY-SA 2.0
• Queenborough CastleRichard Dorrell, CC BY-SA 2.0
• Quintin CastleMichael Parry, CC BY-SA 2.0
• Quoile CastleArdfern, CC BY-SA 3.0
• Raby Castlemalcolm tebbit, CC BY-SA 2.0
• Radcliffe TowerParrot of Doom, CC BY-SA 3.0
• Raglan CastleTyssil, CC BY-SA 3.0
• Rahan CastleUnknown authorUnknown author, CC0
• Rahinnane CastleNigel Cox, CC BY-SA 2.0
• Rait CastleJean Aldridge, CC BY-SA 2.0
• Rampton CastleKeith Edkins, CC BY-SA 2.0
• Ranfurly CastleRosser1954, CC BY-SA 4.0
• Raphoe CastleAndreas F. Borchert, CC BY-SA 4.0
• Rappa CastleMike Searle, CC BY-SA 2.0
• Rathcoffey CastleMike Searle, CC BY-SA 2.0
• Rathfriland CastleEric Jones, CC BY-SA 2.0
• Rathmacknee CastleMike Searle, CC BY-SA 2.0
• Rathumney CastleMike Searle, CC BY-SA 2.0
• Rattin CastleMookiePlays, CC BY-SA 4.0
• Ravenscraig CastleJames Allan, CC BY-SA 2.0
• Ravenscraig CastleJim Davidson, CC BY-SA 2.0
• Ravensworth CastleDavid Martin, CC BY-SA 2.0
• Ravensworth Castlejohn tollitt, CC BY-SA 2.0
• Rayleigh CastleJohn Myers, CC BY-SA 2.0
• Red Bay CastleEric Jones, CC BY-SA 2.0
• Red CastleSnaik, CC BY-SA 2.0
• RedcastleDr Julian Paren, CC BY-SA 2.0
• Redhouse CastleRenata (talk), Public domain
• Redwood CastleSteve Ford Elliott, CC BY 2.0
• Reeves CastleMike Searle, CC BY-SA 2.0
• Reigate CastleRjwilmsi, Public domain
• Repentance TowerLogan5, CC BY-SA 3.0
• Restormel CastleZaian at English Wikipedia, Public domain
• Rhayader CastleEirian Evans, CC BY-SA 2.0
• Rheban CastleMike Searle, CC BY-SA 2.0
• Rhuddlan CastleJulie Anne Workman, CC BY-SA 3.0
• Richmond CastleDylan Moore, CC BY-SA 2.0
• Richmont CastleOriginally uploaded by Rodw (Transferred by Ukexpat), Public domain
• Ripley CastleDposte46, Public domain
• Risinghoe CastleSimon Speed, Public domain
• Robgill TowerRichard Paxman, CC BY-SA 2.0
• Roch CastleLucy Sheers, CC BY-SA 4.0
• Rochester CastleClem Rutter, Rochester, Kent, CC BY 3.0
• Rock of CashelHolger Uwe Schmitt, CC BY-SA 4.0
• Rockfleet CastleMikeoem, CC BY-SA 4.0
• Rockhall TowerChris Newman, CC BY-SA 2.0
• Rockingham CastleBrian Coleman, CC BY-SA 2.0
• Rockstown CastleMike Searle, CC BY-SA 2.0
• Roodstown CastleKieran Campbell, CC BY-SA 2.0
• Roscrea CastleGraham Horn, CC BY-SA 2.0
• Roslin CastleTaken by User:Supergolden, CC BY-SA 3.0
• Ross CastleDumphasizer, CC BY-SA 2.0
• Rossend CastleKevin Rae, CC BY-SA 2.0
• Rossmore CastleWikimedia Commons, Public domain
• Rosyth CastleStevouk at English Wikipedia, Public domain
• Rothesay CastleOtter, CC BY-SA 3.0
• Rothley Castlesarah d, CC BY-SA 2.0
• Rougemont CastleRougemont_Castle_gatehouse,_2010.jpg: Juan J. Martínez from Exeter, UK derivative work: Nev1 (talk), CC BY-SA 2.0
• Rougemont Castlephoto by Humphrey Bolton, CC BY-SA 2.0
• Rowallan CastleSagereid, CC BY-SA 3.0
• Rowton CastleChris Shaw, CC BY-SA 2.0
• Roxborough CastlePublisher - T Mc Clelland , Stationers,, Cookstown, County Tyrone, Public domain
• Roxburgh CastleSteve Kent, CC BY-SA 2.0
• Roxby HallChris Twigg, CC BY-SA 2.0
• Rudbaxton RathJohn Winterbottom, CC BY-SA 2.0
• Rufus CastleMike Smith, CC BY-SA 2.0
• Ruperra CastleAndrew King, CC BY-SA 2.0
• Ruperra MotteJeremy Bolwell, CC BY-SA 2.0
• Rusco TowerM J Richardson, CC BY-SA 2.0
• Ruthin CastleEirian Evans, CC BY-SA 2.0
• Rye CastleDeFacto, CC BY-SA 4.0
• Saddell CastleHchc2009, CC BY-SA 3.0
• Salcombe CastleStephen Lea, CC BY-SA 3.0
• Saltcoats CastleLisa Jarvis, CC BY-SA 2.0
• Saltoun HallJimmydenham, Public domain
• Saltwood CastleEdgepedia, CC BY-SA 3.0
• Sandal CastleAbcdef123456 at English Wikipedia, CC BY 3.0
• Sandgate CastleThe original uploader was Jamesedits at English Wikipedia., Public domain
• Sandown CastleUnknown authorUnknown author, Public domain
• Sandown CastleNick Smith, CC BY-SA 2.0
• Sandsfoot CastleAjsmith141, CC BY-SA 3.0
• Sanquhar CastleColin Smith, CC BY-SA 2.0
• Sauchie TowerKirsty Smith, CC BY-SA 2.0
• Sauvey Castle"Andrew", https://www.geograph.org.uk/profile/66837, CC BY-SA 2.0
• Scaleby CastleSimon Ledingham, CC BY-SA 2.0
• Scalloway CastleTom Pennington, CC BY-SA 2.0
• Scarborough CastleHumphrey Bolton, CC BY-SA 2.0
• Scone PalacePeter Hodge, CC BY-SA 2.0
• Scotstarvit TowerGordon Hatton, CC BY-SA 2.0
• Scrabster CastlePhil Williams, CC BY-SA 2.0
• Seafield TowerEuan Nelson, CC BY-SA 2.0
• Seagate CastleRosser1954 Roger Griffith, Public domain
• Seton CastleRenata Edge, CC BY-SA 2.0
• Shane's CastleKenneth Allen, CC BY-SA 2.0
• Shankill CastleSarah777 at English Wikipedia, Public domain
• Shanmuckinish CastleC Michael Hogan, CC BY-SA 2.0
• Sheffield CastleGregory Deryckère, CC BY 2.5
• Sheriff Hutton CastleShaunconway, CC BY 3.0
• Shirburn CastleColin Bates, CC BY-SA 2.0
• Shotwick CastleJohn Hughes, CC BY-SA 2.0
• Shrewsbury CastleWikimedia Commons, CC BY-SA 3.0
• Shrule CastleMike Searle, CC BY-SA 2.0
• SizerghIan Knox, CC BY-SA 2.0
• Skelbo CastleWojsyl, CC BY-SA 3.0
• Skelmorlie CastleMcGibbon & Ross, Public domain
• Skenfrith CastleDavidmholmes51, CC BY-SA 4.0
• Sketrick CastleWilson Adams, CC BY-SA 2.0
• Skipness CastleIngo Wölbern, Public domain
• Skipsea CastleJThomas, CC BY-SA 2.0
• Skipton CastleDavegill70, CC BY-SA 3.0
• Skryne CastleC O'Flanagan, CC BY-SA 2.0
• Slade CastleIanfhunter, CC BY-SA 4.0
• Slane CastleSitomon, CC BY-SA 2.0
• Sleady CastleMike Searle, CC BY-SA 2.0
• Sleaford CastleRichard Croft, CC BY-SA 2.0
• Slingsby CastleDavid Rogers, CC BY-SA 2.0
• Smailholm TowerTaken by User:Supergolden, CC BY-SA 3.0
• Smarmore CastleKevin Stroup, CC BY 3.0
• Smerby CastleJohnny Durnan, CC BY-SA 2.0
• Snape CastleAlison Stamp, CC BY-SA 2.0
• Snodhill Castleoriginal: Trevor Rickard derivative work: Paravane (talk), CC BY-SA 2.0
• Someries CastleForscher scs, CC BY-SA 4.0
• Somerton CastleRichard Croft, CC BY-SA 2.0
• Sorbie TowerOtter, CC BY-SA 3.0
• Sorn CastleGordon Brown, CC BY-SA 2.0
• South Cowton CastleGordon Hatton, CC BY-SA 2.0
• South Moreton CastleSimon Burchell, CC BY-SA 4.0
• Southampton CastleJohn Speed, 17th century artist, Public domain
• Southsea CastleGeni, CC BY-SA 4.0
• Spofforth CastleTJBlackwell, CC BY 3.0
• Springfield CastleMike Searle, CC BY-SA 2.0
• Spynie PalaceGeorge Reid, Public domain
• St Andrew's CastleSouthamptonwater, CC BY-SA 4.0
• St Andrews CastleTom Parnell, CC BY-SA 4.0
• St Briavels CastleRoy Parkhouse, CC BY-SA 2.0
• St Brides CastleJames Allan, CC BY-SA 2.0
• St Catherine's CastleNilfanion, CC BY-SA 4.0
• St Conan's TowerAlpin Stewart, CC BY-SA 2.0
• St Donat's Castlecowbridgeguide.co.uk, CC BY 3.0
• St Fagans CastleLlywelyn2000, CC BY-SA 4.0
• St Mawes CastleClaudiu Bichescu, CC BY-SA 3.0
• St Quintins Castlecowbridgeguide.co.uk, CC BY 3.0
• Stafford CastleNashetty, CC0
• Stanage ParkPeter Evans, CC BY-SA 2.0
• StanecastleRosser1954 at English Wikipedia, Public domain
• Stanely CastleVictor Nelson, CC BY-SA 2.0
• Staneyhill TowerM J Richardson, CC BY-SA 2.0
• Stansted Mountfitchet CastleThomas Nugent, CC BY-SA 2.0
• Starborough CastleWenceslas Hollar, Public domain
• Staward PeelPeter McDermott, CC BY-SA 2.0
• Stewart CastleKenneth Allen, CC BY-SA 2.0
• Stirling CastleWikimedia Commons, CC BY-SA 3.0
• Stobo CastleRosser1954 Roger Griffith, Public domain
• Stogursey CastleAndrew Riley, CC BY-SA 2.0
• Stokesay CastleAndy / Andrew Fogg from near Cambridge, UK, CC BY 2.0
• Stone CastleKen Brown, CC BY-SA 2.0
• Stoneypath TowerM J Richardson, CC BY-SA 2.0
• Stowey CastleEditor - W.Page; Chapter on Ancient Earthworks - C.H.Bothamley, Public domain
• Strathaven CastleNo machine-readable author provided. Supergolden assumed (based on copyright claims)., CC BY-SA 3.0
• Strome CastleWojsyl, CC BY-SA 3.0
• Sudeley CastleWdejager, CC BY-SA 4.0
• Sundrum CastleG Montgomery, CC BY-SA 2.0
• Sutton Valence CastleUkiws, CC BY-SA 3.0
• Swansea CastleTiia Monto, CC BY-SA 4.0
• Swerford CastleDavid Stowell, CC BY-SA 2.0
• Swords CastleWilliam Murphy, CC BY-SA 3.0
• SycharthLlywelyn2000, CC BY-SA 4.0
• Talla CastleJames Allan, CC BY-SA 2.0
• Tamworth CastleStan, CC BY-SA 2.0
• Tandragee CastleGreyHobbit, Flickr, CC BY-SA 2.0
• Tantallon CastleLynne Kirton, CC BY-SA 2.0
• TapeleyRichard Croft, CC BY-SA 2.0
• Tarbert CastleRtomandl, CC BY-SA 4.0
• Tarset CastlePeter McDermott, CC BY-SA 2.0
• Tattershall CastleBrian from UK, CC BY-SA 2.0
• Taunton CastleRodw, CC0
• Taymouth CastleDudesleeper at English Wikipedia, Public domain
• Tellarought CastleMike Searle, CC BY-SA 2.0
• Temple House Manor and CastleMarcelivan, CC BY 3.0
• Tenby CastleRobert Edwards, CC BY-SA 2.0
• Termonfeckin Castlecode poet, CC BY-SA 2.0
• Terpersie CastleRichard Paxman, CC BY-SA 2.0
• Terringzean CastleRosser1954 Roger Griffith, Public domain
• The CastleBenjamin Smith, CC BY-SA 4.0
• The Lands of RoughwoodGeorge Robertson, Public domain
• The MintNorman McMullan, CC BY-SA 2.0
• Thetford CastleBob Jones, CC BY-SA 2.0
• Thirlestane CastleKevin Rae, CC BY-SA 2.0
• Thirlwall CastleAshley Dace, CC BY-SA 2.0
• Thirsk CastleBill Boaden, CC BY-SA 2.0
• Thomaston CastleOtter, CC BY-SA 3.0
• Thoor BallyleeDr Charles Nelson, CC BY-SA 2.0
• Thornbury Castlenick sarebi, CC BY 2.0
• Thornton CastleDominic Dawn Harry and Jacob Paterson, CC BY-SA 2.0
• Thorpe Waterville CastleWoodford & Co. Property Consultants & Auctioneers, CC BY-SA 3.0
• Threave CastleLornaMCampbell, CC BY-SA 4.0
• Threecastles CastleHamish Bain, CC BY-SA 2.0
• Thurland CastleKarl and Ali, CC BY-SA 2.0
• Thurnham CastleMertbiol, CC0
• Thurso CastleOtter, CC BY-SA 3.0
• Tibbers CastleJeremy Cunnington, CC BY-SA 4.0
• Tickhill Castleoriginal: Michael Patterson derivative work: Paravane (talk), CC BY-SA 2.0
• Tilquhillie CastlePeter Ward, CC BY-SA 2.0
• Timpendean TowerWalter Baxter, CC BY-SA 2.0
• Tinboeth CastleJasper Fforde, CC BY-SA 3.0
• Tinnahinch CastleHumphrey Bolton, CC BY-SA 2.0
• Tinnakill CastleGarry Dickinson, CC BY-SA 2.0
• Tintagel CastleRawac, CC BY-SA 3.0
• Tiverton CastleLewis Clarke, CC BY-SA 2.0
• Togher CastleMike Searle, CC BY-SA 2.0
• Tolquhon CastleRobert William Billings, Public domain
• Tomen y RhodwyddLlywelyn2000, CC BY-SA 4.0
• Tonbridge CastleClem Rutter, Rochester Kent, CC BY-SA 3.0
• Tong CastleWikimedia Commons, Public domain
• Topcliffe CastleMatthew Hatton, CC BY-SA 2.0
• Tor CastleCharles Fraser-Mackintosh (b. 1828 and d.1901), Public domain
• Torrisdale CastleJohnny Durnan, CC BY-SA 2.0
• Torthorwald CastleNorma Foggo, CC BY-SA 2.0
• Torwood CastleNigel J C Turnbull, CC BY-SA 2.0
• Totnes CastlePymouss, CC BY-SA 4.0
• Totternhoe CastleMarc Cohen, CC BY-SA 2.0
• Tower of HallbarUser:Supergolden, CC BY-SA 3.0
• Tower of LondonBob Collowan, CC BY-SA 3.0
• Towie Barclay CastleTravisNygard, CC BY-SA 3.0
• Trabboch CastleRosser1954, CC BY-SA 3.0
• Traquair Housemarsroverdriver, CC BY-SA 2.0
• Treago CastleTony Bailey, CC BY-SA 2.0
• Tregrug CastlePhilip Halling, CC BY-SA 2.0
• Trematon CastleDerek Harper, CC BY-SA 2.0
• Tretower CastlePete Chapman, CC BY-SA 2.0
• Tretower CourtPhilip Pankhurst, CC BY-SA 2.0
• Triermain CastlePeter McDermott, CC BY-SA 2.0
• Trim CastleBilly Irwin, CC BY-SA 2.0
• Trowbridge CastlePhil Williams, CC BY-SA 2.0
• Tudor Trader HouseDeb, CC BY-SA 3.0
• TulliallanWilliam King, CC BY-SA 3.0
• Tullibole CastlePaul McIlroy, CC BY-SA 2.0
• Tulloch CastlePeter Moore, CC BY-SA 2.0
• Tully CastleKenneth Allen, CC BY-SA 2.0
• Tully's CastleIan Paterson, CC BY-SA 2.0
• Tullynally CastlePeter Gavigan, CC BY-SA 3.0
• Turnberry CastleMary and Angus Hogg, CC BY-SA 2.0
• Tushielaw TowerWalter Baxter, CC BY-SA 2.0
• Tutbury CastleDave Harris, CC BY 3.0
• Twizell CastleWalter Baxter, CC BY-SA 2.0
• Twmpath CastleSeth Whales, CC BY-SA 4.0
• Twthill, RhuddlanLlywelyn2000, CC BY-SA 4.0
• Tynemouth Priory and CastleChris McKenna (user:Thryduulf), CC BY-SA 4.0
• Tynte's CastleJonjobaker, CC BY-SA 4.0
• Tyrrellspass CastleBrian Shaw, CC BY-SA 2.0
• Udny CastleSagaciousphil, CC BY-SA 3.0
• Upnor CastlePhil Pead, CC BY-SA 4.0
• Upsall CastleFrank Glover, CC BY-SA 2.0
• Upton CastleThomas Nicholls, Public domain
• Urishay CastlePhilip Halling, CC BY-SA 2.0
• Urquhart CastleLornaMCampbell, CC BY-SA 4.0
• Usk CastlePauline Eccles, CC BY-SA 2.0
• Uttershill CastleM J Richardson, CC BY-SA 2.0
• VenlawMotmit (talk), CC BY-SA 3.0
• Wakefield CastleJ3Mrs (talk), CC BY-SA 3.0
• Walden CastleJanine Forbes, CC BY-SA 2.0
• Wallace's TowerWalter Baxter, CC BY-SA 2.0
• Wallingford CastlePitou250, Public domain
• Walmer CastleLieven Smits, CC BY-SA 3.0
• Walworth CastleHugh Mortimer, CC BY-SA 2.0
• Warblington CastleGeni, CC BY-SA 4.0
• Wardour CastleSimon Burchell, CC BY-SA 3.0
• Wareham Castle and town defencesG. T. Clark (1809-1898), Public domain
• Wark on Tweed CastleWalter Baxter, CC BY-SA 2.0
• Warkworth CastleDraco2008 from UK, CC BY 2.0
• Warwick CastleDeFacto, CC BY-SA 4.0
• Watch Hill CastleRichard Nevell, CC BY-SA 4.0
• Watermouth Castleown photo, Public domain
• Wattlesborough CastleRow17, CC BY-SA 2.0
• Waughton CastleM J Richardson, CC BY-SA 2.0
• Waytemore CastlePAUL FARMER, CC BY-SA 2.0
• Wedderburn CastleDavid Lauder at English Wikipedia, CC BY-SA 3.0
• Weeting CastleAshley Dace, CC BY-SA 2.0
• Wemyss CastleJim Bain, CC BY-SA 2.0
• Wenvoe CastleUnknown authorUnknown author, Public domain
• Weobley CastleJennifer Luther Thomas, CC BY-SA 2.0
• Weobley CastlePhilip Halling, CC BY-SA 2.0
• Weoley CastleAdrian Bailey, CC BY-SA 2.0
• Westenhanger CastleIan Knox, CC BY-SA 2.0
• Wester Kames CastleReading Tom from Reading, UK, CC BY 2.0
• Westhall CastleUlrich Hartmann, CC BY-SA 2.0
• Westport HouseMichael Deligan, CC BY-SA 4.0
• White CastleCadw, OGL v1.0
• White's CastleAndreas F. Borchert, CC BY-SA 4.0
• Whitefield CastleLinda, CC BY-SA 2.0
• Whitslaid TowerWalter Baxter, CC BY-SA 2.0
• Whittingehame TowerLisa Jarvis, CC BY-SA 2.0
• Whittington CastleAtticTapestry, CC BY-SA 4.0
• Whorlton CastlePrioryman, CC BY-SA 3.0
• Wigmore CastleHumphrey Bolton, CC BY-SA 2.0
• Willersley CastleTony Jacobs, CC BY-SA 2.0
• Wilton CastlePauline Eccles, CC BY-SA 2.0
• Winchcombe CastleBryan Pready, CC BY-SA 2.0
• Winchester CastleMartin Kraft, CC BY-SA 3.0
• Windsor CastleDiliff, CC BY 2.5
• Wine TowerUK Payphone Directory, CC BY-SA 2.0
• Wingfield CastleRobert Edwards, CC BY-SA 2.0
• Wisbech CastlePaul Shreeve, CC BY-SA 2.0
• Wiston CastleLucy Sheers, CC BY-SA 4.0
• Witton CastleHugh Mortimer, CC BY-SA 2.0
• Wolvesey CastleSimon Burchell, CC BY-SA 4.0
• Woodcroft CastleAndrew Kerr, CC BY 2.0
• Woodstock CastleMike Searle, CC BY-SA 2.0
• Woodwalton CastleRob enwiki, CC BY-SA 3.0
• Worcester CastleWorcestershire City Museums, CC BY 3.0
• Workington HallH Stamper, CC BY-SA 2.0
• Wormegay CastleBen Harris, CC BY-SA 2.0
• Wrae TowerWalter Baxter, CC BY-SA 2.0
• Wray CastleCellsDeDells, CC BY-SA 3.0
• Wressle CastleDupont Circle, CC BY-SA 3.0
• Wyke CastleAndy Potter, CC BY-SA 2.0
• Wymondley CastleRobin Hall, CC BY-SA 2.0
• Yarmouth CastleChristophe.Finot, CC BY-SA 2.5
• Yester CastleBrendandh, CC BY-SA 3.0
• Yielden CastleLes Harvey, CC BY-SA 2.0
• York CastleFrancis Place (1647-1728), Public domain
• Ystrad PeithyllNigel Callaghan, CC BY-SA 2.0