The first wooden Norman structure was replaced with an unique 90 feet high keep and a 30 feet high curtain wall dating from 1180-90. The strong keep is cylindrical in shape, has 6 strengthening buttresses and is 50 feet in diameter with walls 14 feet thick. It fell into decay in the 16th century and the gatehouse and much of the south curtain wall collapsed, but this prevented it being used in the Civil War.
English Heritage, open all year.
|Off the A630, 5 miles west of Doncaster|
|Castle Hill, Conisbrough, Yorkshire DN12 3BU|