roman city walls in diyarbakir, turkey

ancient civilization rome antique antiquities arch architectural feature archaeology column architecture bridge built structure building exterior castle cave city cultures diyarbakir diyarbakaplusmn province dungeon east empire famous place history kurdistan landscape scenery mardin mesopotamian monument nature people old ruin religion river rock object roman ruined sandstone sky stone material summer tigris travel destinations turkish culture tree walls diyarakir turkey diyarbak?r wall town eastern