St. David's Battery, UNESCO, four guns installed 1910 by British to defend deep water channel leading to Royal Navy Dockyard and Hamilton, Bermuda

bermuda historical guns british military coastal defense marine heritage fortification decommissioned 20th century gun remnants history unesco site royal navy landmark preservation rusted metal artillery scenic view tropical landscape architecture strategy tourism relics cultural significance historic travel destination island environmental context maritime scenery local culture wartime iconic structures archaeological outdoor