rosmont Castle is situated on top of a hill and cut off from the small town that would of, in the past, been located near it by a deep ditch. The castle is relatively small but very strong. The entrance is through a strong gatehouse that would have been protected by a drawbridge over the ditch. The largest building at Grosmont is large rectangular structure that would have been the setting for the great hall. A smaller square keep is set into the curtain wall to the west and there are three more round towers that take up much of what is left of this defensive wall. Grosmont castle is one of the 'Three Castles' owned by Hubert de Burgh. The other two castles are White Castle and Skenfrith Castle situated not far away. These three castles in the Welsh Marches were designed to enforce the Baron's control over the local population.
