basilica cistern, yerebatan sarayi or yerebatan sarnici in istanbul, turkey

angel architecture artistic asia atmosphere ayasofya beach bosporus byzantine byzantium century church cistern city color constantinople culture dedicated destination dramatic dream emperor empire ethereal europe evening fairytale glorious hagia heaven history holiday horizon imperial impressionism istanbul justinian landmark life medieval memory metropolis metropolitan monument mosque museum mystic nature orange peace peaceful pillar queen relax religion reservoir romance romantic scenery scenic shine solar sophia spirit sultan summer sunset symbol tale tank tradition travel turkey underground urban vacation war water yellow