Caister Castle is an impressive moated brick quadrangle fortress, founded by John Falstolf. Built in 1432, on the site of an earlier fortified manor house, the middle ward has a high curtain wall flanked by square and round towers complete with gunloops, one round tower being a lofty six storeys. The outer ward has a weak curtain wall and at the corners are open-backed round bastions complete with arrow loops. In the third ward is the modified Barge House, with a wide arched water-gate underneath it and a large round flanking tower at one corner. 9 miles south-west is Burgh Castle.