Located between the districts of San Antonio and Pignolo, this church was once part of a mid-fourteenth century monastery of the Celestine Fathers. After about a century it was passed on to the Canons Regular of the Lateran, the founders of another monastery, which serves as a walkway today. Consecrated in 1311, the church has a rustic facade (due to the various architectural transformations, visible from the external walls) and 10 side chapels.