It is a religious building located on the eastern outskirts of Carpenedolo, in the province of Brescia. It dates back to the 4th or 5th century.
The basilica-shaped building is Romanesque in shape, with a semicircular apse in Botticino stone, adorned on the outside with thin pilasters and crowned by a brick frame. Reused elements with carved decorations from the early Middle Ages and Roman times are inserted in the masonry.
The façade was originally frescoed and on the south side there was a small annex building which served as a sacristy and as a home for the hermit who guarded the sanctuary, which was demolished in 1966.
The interior has a single nave (19.94 m long and 5.92 m wide), covered by a wooden truss roof supported by five slightly acute arches. In the apse it preserves a fifteenth-century fresco attributed to the Cremonese painter Bonifacio Bembo: in a polyptych the Virgin with the Child and little angels are depicted; on the apse there is a fresco of Jesus enthroned with the Gospel and the four evangelists. Other frescoes are preserved in the choir space (San Pietro, with inscription in Gothic characters) and other fragments on the walls.
The church also houses two such depicting St. Louis and the Annunciation, restored in 1993.