main keep of marugame castle (circa 1641), japan

1641 ancient architecture asia attack battle besiege castle castles circa citadel cultural culture defense donjon fight fort fortification fortress historical history important in invade island japan japanese kagawa keep landmark landscape main marugame medieval military of old one only oriental original property protect samurai shikoku siege sightseeing site stone stronghold structure survived tenshu tenshukaku tower traditional travel turret twelve view wood wooden woodwork