This church was run by the Benedictines but was taken over by the Franciscans in 1260. The Brenzoni mausoleum is definitely the most valuable piece in the whole building. It was built between 1422 and 1439 by the Florentine Nanni di Bartolo. The urn is surrounded by statues of The Resurrection of Christ and overhead is a canopy held open by angels. Inside San Fermo Maggiore are the works by Pisanello of the Annunciation and of St Michael and St Raphael. A small stairway leads down to the lower church which is shaped like a Latin cross and whose walls are decorated with several frescoes from the 16th to the 18th Century.