Basilica Cistern Medusa Heads Have Uncertain Origins

Work on Istanbul's Basilica Cistern began in 532 under Emperor Justinian I, who also commissioned Hagia Sophia, and was completed around 537. It could hold about 80,000 cubic metres of water across roughly 9,800 square metres—about two football fields. Its dark water is supported by 336 marble columns arranged in 12 rows of 28, with carved Corinthian capitals reused from earlier buildings. In the northwest corner, two reused ancient Medusa heads sit on pedestals—one on its side and the other upside down. Their original locations and the reason for their inverted placement remain debated. The video argues that they may have come from the Forum of Constantine and that their placement deliberately reversed pagan symbols or warded off Medusa's gaze. The cistern was drained for restoration in 1985, when workers removed about 50,000 tons of mud.