Lippo Memmi
The cathedral's valuable pieces of art including "The Feast of Herod" by Donatello, and works by Bernini and the young Michelangelo make it an extraordinary museum of Italian sculpture. The "Annunciation between St. Ansanus and St. Margaret", a masterwork of Gothic painting by Simone Martini and Lippo Memmi, decorated a side altar of the church until 1799, when it was moved to the Uffizi of Florence.