San Francesco Church was built between 1280 and the early 14th century, on the site a small church of the Minor Friars dedicated to St. Nicholas. The construction was commissioned by the Lodi bishop Bongiovanni Fissiraga.
In 1527 it was assigned to the Reformed Franciscan Order of St. Bernardino, who, in 1840, were replaced by the Barnabites. In the first years of their tenure, they carried on a wide restoration program, which was completed in 1842.
The church has an unfinished façade in cream-color brickwork, charactersized by a tall ogival cusped portico, also in brickwork. This is flanked by two blind columns and surmounted by a large rose window in white marble, in turn sided by two double ogival mullioned windows.
The wide interior is on the Latin cross plan, divided into a nave and two aisles with four spans each; there are also side chapels. The nave and the aisles are cross-vaulted, separated by ogival arches supported by large brickwork columns. Walls and columns are decorated by numerous frescoes dating from the 14th to the 18th century; among the many 14th century ones, particularly renowned are the Madonna with Child, Saints and Antonio Fissiraga from an unknown Lombard master. In the right aisles are 16th-century frescoes depicting Madonna with St. Francis, St. Bonaventure and a Donor by the local painter Sebastiano Galeotti, a collaborator of Callisto Piazza.
Among the 16th- and 17th-century paintings are included a Saint Anthony meeting Ezzelino III da Romano by il Malosso, St. Francis Receiving the stigmata by Sollecito Arisi and a Madonna of Caravaggio by Enea Salmeggia.
The church contains the tombs of several notable people, including the poet Ada Negri and the naturalist Agostino Bassi.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.