Located near the carpark at Rye Harbour, this Martello Tower is one of the 25 survivors of the original 70 structures built in fear and protection against French invasion. Overlooking the River Rother Estuary, the Martello Tower was designed by civil engineer, Sir John Rennie. Built to resist cannon attacks, the walls are 7ft thick, a width which ensured that cannon balls would annoyingly just bounce off the defence.