Corfe Castle, Dorset
Corfe Castle was built after the Norman Conquest in the 11th century. Improved by later Monarchs including Henry VIII, who added additional walls, towers and gatehouses, the Castle remained in Royal possession until sold by Elizabeth 1st in the 16th century. Its ruinous condition is largely the result of the Civil War when it was besieged and partially demolished by order of Parliament in 1646. The Castle is also believed to be the inspiration for Enid Blyton's Kirrin Castle.