 The western entrance to the Middle Ward is now open , and a gateway leads north from the ward onto the North Terrace . The eastern exit from the ward is guarded by the Norman Gatehouse . This gatehouse , which , despite its name , dates from the 14th century , is heavily vaulted and decorated with carvings , including surviving medieval lion masks , traditional symbols of majesty , to form an impressive entrance to the Upper Ward . Wyatville redesigned the exterior of the gatehouse , and the interior was later heavily converted in the 19th century for residential use . 
