The church was consecrated back in the Xth century. The crypt has 12th-century mosaics depicting the zodiac signs on a marine background. The presbytery has a contemporary mosaic showing battle scenes and a depiction of Christ.

In an small triangular square in Piacenza is this beautiful church. The church is very old but parts and decorations have been modified and added during the centuries. The most notable part is the crypt with its unique mosaics. Light will turn on as you walk down the staircase.