The paintings in the church are almost all the work of Emilio Scherer, a Parma painter who worked in the late 19th and early 20th centuries. Certainly the most interesting paintings are in the large dome and Presbytery. The dome painting, depicting the glory of Paradise, is a work of rare expressiveness and dynamism. On the four spandrels of the chancel are painted the evangelists: St. Matthew conversing with the Angel; St. Mark with the lion; St. Luke, in whose background lies the winged ox, holds the palette, brushes and colors and shows Our Lady in picture; from the spandrel where St. John is depicted the eagle takes flight almost to seize St. Mark’s lion. In the 7-meter compartment interposed between the flagpoles, within Baroque-style frames, are the two side paintings of the chancel, of great beauty and variety. The Annunciation of the Virgin is depicted on the right side, interesting for the warm light that invests Mary and the Angel. Opposite above the Bishop’s Throne is a depiction of the visitation of the Mother of Jesus among women, who presents herself to St. Elizabeth who welcomes her with open arms, while on the threshold Joseph and Joachim give each other a hospitable embrace. The bowl of the apse depicts in stereoscopic vision a view of Bosa reflected in the waters of the Temo. On one side is old St. Aemilius in the golden cope, on the other St. Priam with arms, bending on his knees, seemingly invoking the Virgin in defense of the faithful. Above the patron saints, in an aerial group among angels singing and playing appears sweetly and full of grace the Immaculate Virgin Mary above a crown of clouds.