İstanbul, the former Ottoman Capital
Fresco of Emperor Constantius II (to the left of Jesus) in the Hagia Sophia, a Greek Orthodox Christian patriarchal basilica, later an imperial mosque, and now a museum (Ayasofya Müzesi). The first church built on this site was inaugurated during his reign, on 15 February 360.
Photo by Ludo Kuipers, Tue Oct 02, 1973