SANDOWN-CASTLE, (Kent) on the N. side of Deal, was erected by Henry VIII. for security of the coast. It consists of four lunets of very thick arched work of stone, with many port-holes for great guns. In the middle is a great round tower, with a cistern at top, and underneath an arched cavern bomb-proof. The whose is encompassed by a fosse, over which there is a draw-bridge.