The church of Piovà Massaia, attributed to Benedetto Alfieri, is dedicated to Saints Peter and George and was built between 1749 and 1774 on the initiative of Count Ricci, on the site of the ancient church of San Michele in Monte Cornigliano. The building has the typical baroque plan of an elongated Greek cross and an imposing octagonal dome covering the intersection of the arms of the cross. The two-bay presbytery has a barrel vault and dome with an elliptical base and ends with a semicircular apse with a ribbed semi-vaulted vault. The galleries have barrel vaults and have carved and painted wooden balustrades. The façade has two superimposed orders and three bodies with three entrances a large circular window and a tympanum at the top. The imposing bell tower, whose construction began in 1779, recalls the Juvarra examples of Superga and the Alfierian one of San Gaudenzio in Novara. At the top of the bell tower is the lantern delimited by angular volutes and surmounted by a metal spire.