Ludlow Castle

Ludlow Castle is a ruined medieval fortification in the town of the same name in the English county of Shropshire, standing on a promontory overlooking the River Teme. The castle was probably founded by Walter de Lacy after the Norman conquest and was one of the first stone castles to be built in England. During the civil war of the 12th century the castle changed hands several times between the de Lacys and rival claimants, and was further fortified with a Great Tower and a large outer bailey.

Source: Wikipedia