Now inside the building there are only the baptismal font made in 1370 and the Monument of the Anti-Pope John XXIII, an integration of architecture and sculpture made between 1422 and 1428 by Donatello, the famous sculptor, and Michelozzo, the architect who realized also Palazzo Medici Riccardi, the first residence of Medici family in Florence.
Michelozzo and Donatello, Monument of the Anti-Pope John XXIII,
1422-1428, Florence, Baptistery
(source: http://upload.wikimedia.org/wikipedia/commons/1/17/
Tomba_dell%27antipapa_giovanni_xxiii%2C_01.JPG)
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