The Vasari Corridor passes through the façade of this church and on the inside there is large window, covered by a thick gate, where the Grand Dukes of the Medici family used to listen to the mass without being seen by the people staying at ground level.

Only the 14th century Chapter House survives from the Romanesque with fragmentary frescoes (1387) by Niccolò di Pietro Gerini (Crucifixion and in the ceiling, roundels with the Redeemer and the Seven Virtues).

The painting of the vault has disappeared but in the chapel can still be seen the Four Evangelists in the pendentives and two of the greatest masterpieces by Pontormo: the Virgin and the Angel Gabriel on the side wall and the altarpiece of the Deposition above the end altar.

The latter, enclosed in its gilded fame, with its surrealistic dimensions of elongated and entangled bodies and its range of iridescent colours, constitutes one of the most important works of Early Mannerism.

The desire to create a complementary space to this led to the decoration of the opposite Canigiani chapel by Bernardino Poccetti (Miracle of Our Lady of the Snow, 1589–1590).