Built in 1307 on the ruins of the temple of Proserpine, has an exterior entrance stairway at the end of which there are three portals surmounted by a sixteenth century tower, a portal in the side face of the '500 with a bas-relief of St. Martin. Within three naves divided by alabaster columns and capitals finely decorated wooden ceiling and artwork by Guglielmo Borremans and Filippo Paladino.