Santa Maria in Calvenzano Church, Romanesque church in Vizzolo Predabissi, Italy

Santa Maria in Calvenzano is a Romanesque church north of Vizzolo Predabissi, along the Via Pandina. Its facade, topped by a 15th-century tympanum, shows three naves of different heights; five lower arches indicate a planned but never built narthex. Inside, three naves are divided by alternating pillars, the central one with a wooden truss ceiling and the side ones with sail vaults. Only the northern and central apses survive.

The site held a Roman fortification guarding the Via Pandina, then a 4th-century cella memoriae and a Carolingian place of worship. The first written record, dated 1090 or 1093, is a donation of the church and surrounding lands to Cluniac Benedictines by three Melegnano nobles, vassals of Archbishop Anselmo III. A 1095 bull of Pope Urban II names a Cluniac priory here; the present church rose around 1040 on earlier remains.

The main portal's arch, carved in Saltrio stone, carries a Romanesque sculptural cycle of the Como school from the first half of the 12th century, with nine scenes from the Infancy of Jesus. Below them run geometric, plant and animal motifs. Further Romanesque carvings survive on the north side and the main apse.

The church stands north of Vizzolo Predabissi's built-up area, along the Strada Pandina, within the rural hamlet of Calvenzano that grew out of the old monastery. It is reached on foot from the village; the surrounding complex was converted into a farmstead (cascina) after 1769. As an active parish church, visits should be timed around services.

The site rests on a Roman fortification guarding the Via Pandina, and a small cella memoriae, perhaps dedicated to a martyr, was built here in the 4th century. Tradition long held that the philosopher Boethius was killed at Calvenzano in 524 or 526, but recent research has refuted this.