The remains of the roman Castle can be visited
Ancient BuildingBardon Mill
Roman Fort Vercovicium

Vercovicium, now known as Housesteads Roman Fort, was an auxiliary fort on Hadrian's Wall, in the Roman province of Britannia. Its ruins are located at Housesteads in the civil parish of Bardon Mill in Northumberland, England, somewhat to the south of Broomlee Lough.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Ozymandias
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 55.0133, -2.3306