Castra Lemanis
Lympne, United Kingdom
Portus Lemanis, also known as Lemanae, was the Latin name of a Roman Saxon Shore fort, settlement and port in southern Kent. The modern village of Lympne derives its name from the ancient port. The site, known locally as Stutfall Castle, is on private land which is accessible by public footpath.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).