Hagia Sophia: Imperial Gate mosaic above grand bronze doors.

Above the grand entrance, the 10th-century Vestibule of the Warriors mosaic in Istanbul's Hagia Sophia depicts the Virgin Mary enthroned with the Christ Child. To the viewer's left, Emperor Justinian I presents a model of the Hagia Sophia, while to the viewer's right, Emperor Constantine I offers a model of the city of Constantinople, symbolizing their dedication of the empire's spiritual and temporal centers to divine protection.