Similar to neighbouring Northumberland, Cumberland formed part of a militarised frontier in Medieval times, and as such has many castles, with notable examples being at the county town of Carlisle, as well as at Bewcastle and Penrith. | Similar to neighbouring Northumberland, Cumberland formed part of a militarised frontier in Medieval times, and as such has many castles, with notable examples being at the county town of Carlisle, as well as at Bewcastle and Penrith. |