The church of San Lorenzo is in Lombard Romanesque style, built as a presbytery as early as 1159 and extensively renovated in the late 14th and early 15th centuries, probably by the same architect who built the church of Sant'Agnese.

Both the shape of the building plan and the elevation trace the church back to the type of architecture known as "sala", typical of religious buildings in which the roofs of the naves are of equal height, according to a concept tending to create unified and clearly defined spatial environments.

Externally, the terracotta façade is three-sided by two half-columns that are interrupted halfway along the surface and ends with a central rose window and a niche housing the statue of the church’s saint. The front has a crowning of pointed arches in terracotta.

Inside, with three naves and supported by brick pillars, we note the fresco in the apse basin depicting the Resurrection painted by Callisto Piazza.

Also noteworthy are the altarpiece in the Vistarini Chapel by Bernardino Campi depicting the Pietà and the 16th-century frescoes by Francesco Carminati called il Soncino depicting Saint Anne and the Madonna and Baby Jesus.