The lunette above the entrance portal has a modern mosaic depicting Saint Vicinius wearing a bishop's mitre and holding a chain.
Among the paintings here are a Visitation by Michele Valbonesi; and Annuciation (18th century) by Mattia de Mare; and finally an 18th-century Madonna and Child with Santa Lucia and the Souls of Purgatory by unknown hands.
Near the apse is a canvas depicting the Mass of San Gregorio Magno attributed to Carlo Cignani.
Opening to the nave on the right is the chapel of San Vicinio with elaborate stucco decoration patronized by the bishop Paolo Calbetti in 1755.
The altarpiece is a Madonna and Child with San Vicinio Crowned by Ippolito Scarsella, also called il Scarsellino.