The wide rectangular square hosts two religious buildings: the Oratorio del Gonfalone and the 13th-century Church of San Francesco, now Church of Santa Angela da Foligno. The church of San Francesco, built on the older church of San Matteo, was completely transformed in the first half of the 19th century to a design by Andrea Vici. The adjoining convent with a beautiful cloister inside is said to have been erected by St Francis himself in 1213. In reality, it was only in 1255 that Alexander IV donated the Palatium Curae, known as the imperial palace, to the Franciscans to erect the convent. Here, in the first half of the 13th century, the municipal residence was located. On the opposite side, there is the palace, at the moment the seat of the magistrate's court, built in 1917 by architect Osvaldo Armani. The Oratorio del Gonfalone, a remake of a primitive 16th-century chapel dedicated to the Holy Mary is now an example of Rococo style with valuable stucco work inside.
