The existence of the small oratory of San Pietro is documented since 1148. Built on a pre-existing Longobard necropolis, the church of Saints Nazario and Vittore, mentioned as early as 777, had cemetery functions until the construction of the new church of S. Pietro, which took its place at the end of the XII century. Starting from the late Middle Ages it underwent successive and radical transformations.
The interior of modest dimensions has a single nave covered by a cross vault divided into four sails, under the modern glass floor are visible the foundations of the ancient apse and a Lombard burial. The walls and the vault are covered by a beautiful cycle of frescoes by an anonymous author dating back to the fourteenth century.
