It is certainly the oldest in the district, it was built in 1225 and owes its fame to monastic life, where the rule of Santa Chiara is still observed, who led the Blessed Mattia into it.

Located at the southern end of the city, it also had a defensive function as evidenced by the presence of a high bell tower, dating back to the second half of the 15th century, which certainly served as a sighting place.

In the monastery there are precious works of art, including the painted cross, one of the very few thirteenth-century crosses by the Marche author.