John the Evangelist on a background painted with tapestry supported by Angels, an artwork signed by Ugolino di Gisberto and dating back to the 16th century; on the internal side of the second pillar, within a shrine, there is a Madonna and Child in multicolour stucco of the late 15th century and a tombstone with an image of a reclining figure.
St. Rocco and Angels are represented on the third pillar, under the arch on the right side. 
In the central aisle nearby the door there is a St. Jerome attributed to Pierantoni Mezzastris; a Maddona with Child among Angels, attributed to Lattanzio di Niccolo, is depicted on the first pillar; there are also frescoes of the 14th century representing Saints Peter and Paul, a Madonna with Breastfeeding Child, the Annunciation; in the second pillar on the left, inside a niche there is a multicolour Papier-mâché bust of the 16th century, representing Jesus with tied hands and the crown of thorns. 
The right aisle has in its niches pictures of Crucifixions; under the first arch there is a Christ carrying the cross attributed to Niccolò Alunno; on the second pillar St. Lucia and St. Amico, by Pierantonio Mezzastris; under the second arch a St. Peter martyr attributable to Niccolò Alunno. On the alter nearby are frescoes showing St. Catherine of Alexandria and St. Jerome by Pierantonio Mezzastris. 
A chapel with two nice windows on the right wall opens up in the last part of the left aisle: in the conch of one of them there is a fresco representing the Archangel Gabriel and Disma (the good thief) of the second half of the 12th century; in the bottom niche there is a Blessing Christ between St. Peter and St. Paul and a decoration that seems to refer to an oriental tapestry, and a Romanesque wooden statue of the Madonna is attributable to the 12th century.