Landguard Fort
Suffolk, England
Landguard Fort is a castle in Suffolk, England, first built in 1540. It is a scheduled monument. The nearest other castle is Ipswich Castle, 11 mi away. It is cared for by English Heritage.

Landguard Fort at a glance
Built
1540
16th century
Type
Castle
Cared for by
English Heritage
Heritage status
scheduled monument
Grade I listed building
About Landguard Fort
Landguard Fort is a fort at the mouth of the River Orwell outside Felixstowe, Suffolk, designed to guard the mouth of the river. It is now managed by the charity English Heritage and is open to the public.
From the Wikipedia article on Landguard Fort, CC BY-SA 4.0.
Landguard Fort sits at 51.9376, 1.3221 in Suffolk. The closest other castles are Ipswich Castle (11 mi), Orford Castle (14 mi) and Parham Hall (17 mi). Suffolk has 15 castles in all.