Tomb of Antipope John XXIII built
1426 CE.
Shown on the map at 43.773°, 11.255°.
The marble-and-bronze tomb monument of Antipope John XXIII (Baldassare Cossa, c. 1360–1419) was created by Donatello and Michelozzo for the Florence Baptistry adjacent to the Duomo. It was commissioned by the executors of Cossa's will after his death on 22 December 1419, and completed during the 1420s, establishing it as one of the early landmarks of Renaissance Florence. According to Ferdinand Gregorovius, the tomb is "at once the sepulchre of the Great Schism in the church and the last papal tomb which is outside Rome itself". Cossa had a long history; the tomb and the linkage between Cossa and Florence have been interpreted as a snub to Cossa's successor Pope Martin V or vicarious "Medici self-promotion", as such a tomb would have been deemed unacceptable for a Florentine citizen. The tomb monument's design included figures of the three Virtues in niches, Cossa's family arms, a gilded bronze recumbent effigy laid out above an inscription-bearing sarcophagus supported on corbel brackets, and above it a Madonna and Child in a half-lunette, with a canopy over all.
Text from the Wikipedia article Tomb of Antipope John XXIII, licensed CC BY-SA 4.0.