Medusa Head, Byzantine Basilica Cistern, Sunken or Underground Palace, Sultanahmet, Istanbul, Turkey, Europe

photography colour colour image color color image vertical vertical image day indoors inside nobody no one no one travel travel destination travel destinations medusa head stone carving carved upside down column plinth byzantine basilica cistern sunken palace underground palace sultanahmet istanbul turkey europe european building exterior building buildings building interior building interiors interior interiors architecture architectural cistern detail ancient culture antiquity symmetry