Apse mosaic (detail)
by TORRITI, Jacopo, Mosaic
Throngs of adoring angels take an active interest in the ceremony. They are flanked on either side by applauding saints - Peter, Paul, and Francis on the left. Pope Nicholas IV is seen kneeling in adoration of the two figures on the throne, but he is considerably smaller than they, even smaller than the angels and the saints standing behind them.