ancient battlements castle defence defend defense defensive England english Great Britain historical history old secure security stone strong Sussex tower wall architecture bell building Byzantine chapel christian church dome Greece Greek little orthodox religion religious small tiny arch bridge Cahors flow fortified France french mediaeval medieval protection river towers water weir Bonaguil dordogne high power Remains strength blue coast coruna Coruña eu galicia Hercules Herritage house light lighthouse ocean peninsula roman romanic sky Spain structure World years heritage boat canal facade grand home Italy mansion mooring palatial row splendid Venice villa waterfront bed bush formal garden paved peaceful plant relaxing shrub spring tranquil tree walled