Angel’s face uncovered at Istanbul’s Haghia Sophia cathedral
The seraphim figure is one of two located on the side of a dome. The figures had been covered up along with the building’s other Christian mosaics shortly after Constantinople - the former name for Istanbul - fell to the Ottomans in 1453. At that time, the cathedral was turned into a mosque.
The mosaics were plastered over according to Muslim custom that prohibits the representation of humans.