The Dominican church of San Pietro Martire, resembling a Cistercian church in its simplicity, was built in the first half of the 14^th century alongside a convent founded in 1280 that was later the seat of the Inquisition court. Work carried out at the beginning of the 20^th century restored the original appearance of both exterior and interior. The church has numerous fragments of frescoes, which were probably executed by Lombard painters influenced by the language of Giotto (first half of the 14^th century). The terracotta polyptych whose remains were removed from the external wall of the apse where they were placed in 1817 (?) may originally have decorated one of the altars in the church. The remains include three fragments of the cornice and two plaques with busts of saints together with four larger pieces that may correspond to four sections of this single-storeyed altarpiece. Classical shell niches hold the highrelief figures of St. George (or St. Michael), St. Paul, St. John and a holy monk (possibly Peter the Martyr) . Despite their differing appearances, they share similar characteristics – deeply folded drapery, sharply modelled features and lavishly ornate cornices – that allow us to date them to the 1450s and attribute them to an anonymous Lombard master who executed other fine pieces, including a polyptych in the parish church of Mozzanica. The same author created the Kneeling Madonna which may have been part of another polyptych in San Pietro Martire. Here too the elegant pose and girdle may allude to the cult of the Madonna of the Girdle.