We seem to be a long way from the Exaltation of the Cross, the subject of the last scene in Gaddi's fresco cycle, in which the Emperor Heraclius, having alighted from his horse by order of an angel and walking barefoot like a mendicant friar, bears the relic into the holy city.

WSJ: A Heavenly View From On High | Basilica of Santa Croce | Agnolo Gaddi | By Francis X. Rocca