fort st angelo, vittoriosa birgu, malta

building architecture monastery arch facade palace town landmark history synagogue estate ruins fortification church tourism fort angelo vittoriosa birgu malta fortizza sant'an?lu bastioned located centre grand harbour originally built medieval period castle called castrum maris rebuilt order saint john 1530s 1560s role order's headquarters great siege 1565 malta's tentative list unesco world heritage sites 1998 knights' fortifications harbours malta