Built between 1278 and 1363 upon will of the ghibelline Ubertino Landi, it is in Gothic Lombard style, with a firebrick façade. A work by the Minor Friars who wanted to expand the primitive church, at the end of the 18th century it was transformed into hospital and warehouse .After Napoleon’s exile it returned to the Friars; in 1848 Piacenza annexion to the Piedmont kingdom was declared here. The façade has two buttresses, a rose window, spiree and pinnacles, a 15th century middle portal and, on both sides, two imposing flying buttresses. The cloister was on the right side: only an arcade has remained today.