This collegiate church (11C-16C) stands at the foot of the Rupe du Parco Paradiso rock. The entrance opens on to a pretty 17C cloister. The interior houses two canvases by Pietro Ligari and Giuseppe Nuvoloni. On the same side as the cloister, the baptistery is home to a Romanesque baptismal font (1156) decorated with interesting low-reliefs. From the cloister you can access the Museo del Tesoro, which displays the famous Pace di Chiavenna, a precious cover of an evangelistary dating from the 11C.