The Church of the Immaculate Conception and Saint Philip, commonly known simply as the Church of Saint Philip, was commissioned by the Fathers of the Congregation of the Oratory between 1680 and 1722. It was designed by the Roman architect Francesco Massari, a pupil and collaborator of Borromini; following the architect's death in 1705, construction was entrusted to Luzio Bonomi of Ripatransone.
The exterior underwent structural reinforcement and restoration in the year 2000.
The interior, considered the finest in the city and restored between 1972 and 1974, features a single nave with three chapels on each side, a pronounced transept, a graceful dome over the crossing, and a straight-walled apse.
The barrel vault with lunettes was completed in 1706. Stucco decoration began in 1721, executed by M. Tobia of Milan, who created the cornices for the apse and dome; the following year, the Oratorian lay brother Lorenzo Vibi of Perugia created the stucco work for the chapels, cornices, and capitals free of charge. Master A. Costantini of Offida crafted the stucco work for the dome and the Oratorian emblem repeated across the four pendentives.
Since 1955, the walls have displayed the 14 Stations of the Cross, scagliola bas-reliefs created and donated by Uno Gera. Above the chapel arches hang six canvases depicting (from the right): a Saint of the Society of Jesus (Saint Francis Xavier), Saint Sebastian (a copy of the work by the same name by Guido Reni), and Saint Gregory the Great (a work by Lorenzo Foschi, dated 1634); and on the left (starting from the first chapel): a Saint of the Society of Jesus (Saint Ignatius), Saint Charles Borromeo, and Saint Andrew the Apostle (a work by Lorenzo Foschi and Silverio Carena dated 1634).
Sources and photo: https://www.visitripatransone.it/chiesa-san-filippo/