The Piazza Arringo, also known as the piazza dell'Arengo, is the oldest monumental piazza in the city of Ascoli Piceno. Rectangular in form, numerous important monuments face the piazza including: the palazzo Fonzi, the palazzo dell'Arengo from the 13th century (also known as the palatium Aringhi), the Bishop's residence, the Cathedral of Saint Emygdius, the baptistery of Saint John, the diocesan museum, and the palazzo Panichi.