Siena Cathedral - The Chigi Chapel

The Chigi Chapel

The small Chigi Chapel (or Cappella della Madonna del Voto) is situated in the right transept. It is the last, most luxurious sculptural addition to the Duomo, and was commissioned in 1659 by the Sienese Chigi pope Alexander VII. This circular chapel with a gilded dome was built by the German architect Johann Paul Schor to the baroque designs of Gian Lorenzo Bernini, replacing a 15th century chapel. At the back of the chapel is the Madonna del Voto (by a follower of Guido da Siena, 13th century), that even today is much venerated and receives each year the homages of the contrade. On the eve of the battle of Montaperti (4 September 1260) against Florence, the city of Siena had dedicated itself to the Madonna. The victory of the Sienese, against all odds, over the much more numerous Florentines was ascribed to her miraculous protection.

Two of the four marble sculptures in the niches, are by Bernini himself: Saint Jerome and Mary Magdalene. The other two are Saint Bernardine (Antonio Raggi) and Saint Catherine of Siena (Ercole Ferrata). The eight marble columns are originally from the Lateran Palace in Rome. The bronze gate at the entrance is by Giovanni Artusi.