Gunnerton Castle
(Money Hill)
Location OS Landranger sheet 87
NY 908 757 
How to get there From Gunnerton Village follow the Birtley road down over the burn take the sign to Gunnerton Fell. The Castle is in the woods on the far side of the Coal Burn, less than 1/2mile.
A superb Motte and Bailey site. For another, see Elsdon