ancient archways of bahrain fort or qal'at al-bahrain, unesco world heritage site in manama, bahrain

archway corridor architecture remains ruins aged weathered bahrain fort qal 039 albahrain portuguese fortress unesco world heritage site old historic ancient medieval stone preserved iconic remarkable structure archaeology dilmun civilization persian gulf manama middleeast asia beautiful stunning amazing impressive scenic sunlight blue sky shade shadow outdoor daytime travel tourism holiday vacation leisure sightseeing