Coordinates: 41°48′27″N 12°40′54″E / 41.80758611°N 12.68159167°E
Frascati Cathedral (Italian: Basilica Cattedrale di San Pietro Apostolo, Duomo di Frascati) is a Roman Catholic cathedral and minor basilica in Frascati, Italy. Dedicated to Saint Peter the Apostle, it is the seat of the Bishop of Frascati.
Construction on the present building (the fifth cathedral of this see) began in 1598, to the designs of Ottaviano Nonni (best known as Mascherino). After twelve years, on June 29, 1610 the first Mass was celebrated. In 1696 Girolamo Fontana began work on a new façade, which was finished in 1700. The two bell towers on either side of it were constructed later.
Te cathedral is built on a Greek cross floorplan, and houses a wooden crucifix of the 11th century from Tusculum, a Madonna (Mysteries of the Rosary) attributed to Domenichino, a relief by Pompeo Ferrucci (1612) representing Jesus handing over the keys to Saint Peter, and a 14th-century Madonna and Child in the Chapel of the Gonfalone, that was retouched by Domenichino.