The Church construction was begun over the site of the Chiesa di S.Maria della Fossa
The interior has a single nave and is harmonically divided by adorned Dorian pilaster, which reach the bottom of the coffered ceiling ( 1550 ) and include three arcades per side with altars in niche.
The marble pavement and balustrade were made in 1757
1ST TO RIGHT
Altarpiece Jacopo Zucchi Birth of John the Baptist 1585
Above R: St Philip L: St Thomas
2nd TO RIGHT
Altarpiece school of Vasari Incredulity of St Thomas
Above R: St Bartholomew L: St Jude Taddeus
3rd TO RIGHT Cappella Rucellai
Altarpiece Cristoforo Roncalli (Pomarancio) Visitation
Above R: St Simon L: St Mattew
ALTARPIECE
Giorgio Vasari Behading of St John
3rd TO LEFT
Cappella del Crocefisso Modern Crucifix
Above R St Peter L St Andrew
2nd TO LEFT
Altarpiece Giovanni Battista Naldini St John the Evangelist in the Cauldron of boiling oil 1580
Above R St James the Elder L St Mattew
1st TO LEFT
Cappella della Madonna della Misericordia 14th century image of the Virgin and Child
Above R St John the Evangelist L St James the Younger