Castle Hill is an early 12th century, earthwork motte and bailey fortress, founded by de Busli family. In the 12th century, William de Lovetot may have founded a stone castle on the mound but of the layout and history nothing is known for certain. A wide ditch cuts off a promontory, to make a large flat platform and a steep slope formed by the valley of the River Ryton, gives defence to the north. 7 miles south-east at Bothamsall is Castle Hill and 9 miles north is Tickhill Castle.