Tradition holds that the church was built at the site of the forum and a temple of Juno. The archeological findings in the crypt of the church suggest a paleo-christian foundation; documents record a refurbishment of a mosaic pavement in 977, commissioned by pope Benedict VII. It was originally dedicated to the apostles Andrew and Bartholemew, and reconsecrated in 1013 by pope Benedict VIII. The Bell-tower was added at the start of the 13th-century.[2]
The facade of the church reflects a 1926 refurbishment that added a bas-relief to the portal and a rose-window above. The interior has a central nave and two aisles separated by a arches and columns. Adjacent to the bell-tower is the mannerist-architecture City Hall.