Corfe Castle is an 11th century fortification in Dorset on the English South Coast. Built by William the Conqueror, it was one of the first castles to be built partly with stone. It has played an important role through many episodes of British history, including the English Civil War. Built in a gap in the Purbeck Hills, it's considered one of the greatest castles in Southwestern England. In this amazing video, contributor Benpwalis flies a drone over this amazing Norman castle, an English cultural treasure.