At the beginning of the main street is the Palazzo Conti built between the thirteenth and fourteenth century. The palace consists of two wings of different eras linked by a large arch with a late Renaissance gateway to the building and courtyard. The entrance and courtyard are decorated and embellished with a beautiful sixteenth-century fountain. One part of the building houses the city hall, while the main floor, richly frescoed, is private. Here Pope Innocent XIII was born.