medieval watchtower, a type of fortification, in capraia island, italy under the milky way

ancient archaeological architecture arean background barzan bay beach beautiful blue building cagliari canyon capraia famous fortification from grand guard heritage high historic island italy landmark landscape main may medieval mediterranean milky national nature night nobody observe old outdoor park place provide purpose rock safe sea sentinel site sky surrounding tourism tower travel type tyrrhenian under view watch watchtower water way wayn waynits which