A Norman motte & bailey dating from 1072, built on a rocky outcrop. The stone curtain walls and towers were added in the 1170's and the stone keep some years later. By the end of the 14th century it had been strengthened and was one of the strongest castles in the north of England. It was beseiged three times during the Civil War and afterwards in 1649 it was demolished by Parliament. Only parts of the towers and walls remain.