the basilica cistern (yerebatan sarnici)

ancient arch architecture basilica beneath bosphorus brick byzantine century cistern cisterns column columns constantinople dark during emperor empire formerly golden greek hagia historic historical hundred illuminated illumination interior islam istanbul justinian lamp largest lie light located medieval mirror night old palace peninsula reflection reign reservoir roman sarayburnu sarayaplusmn sarnici sarnaplusmn caplusmn several sophia southwest stone storage sultan sultanahmed sultanahmet sunken symetrical symmetry tank that the tourism touristic travel turkey turkish underground vault was water yerebatan