Caister Castle is an impressive moated brick quadrangle fortress, founded by Sir John Falstolf. Built in 1432, on the site of an earlier fortified manor house and chapel, it was one of the first major brick built buildings in England. Rectangular in plan and of three wards, the remains of the hall and domestic buildings are still standing, flanked by round angle towers. In the inner ward there are three gunports in the lofty six storey north-west tower and several gunports in the high curtain wall. The outer ward is thought to be older, the curtain wall which lacks strength is flanked on the angles by open-backed round bastions, complete with arrow loops. In the third ward is the modified Barge House, a wide arched water-gate and a large round flanking tower, which was altered by the Paston family in the 15th century. 9 miles south-west is Burgh Castle.