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The Tomb of Antipope John XXIII was created by Donatello and Michelozzo for the Florence Baptistery adjacent to the Duomo. It was commissioned after Antipope John XXIII's death on December 22, 1419, and completed during the 1420s, establishing it as one of the early landmarks of Renaissance Florence. John XXIII had a long history of cooperation with Florence, which had viewed him as the legitimate pontiff during the Western Schism. Its design included figures of the three Virtues in niches, John XXIII's family arms, a gilded bronze recumbent effigy laid out above an inscription-bearing sarcophagus, and a Madonna and Child in a half-lunette, with a canopy. At its completion, the monument was the tallest sculpture in Florence. The tomb monument was the first of several collaborations between Donatello and Michelozzo; attribution of each design element to the artists, as well as interpretations of its design and iconography, have been debated by art historians. (Full article...)