The Palazzo dei Priori (Priority Palace) contains a number of interesting rooms and rooms. The building was built in the 16th century mainly of local travertine and white and red stone from the neighboring Bettona.
The assembly hall of the city superiors ('Sala dei Priori' and 'Sala dei Notari') from 1293 has with its eight Schwibbögen a very unusual form. Schwibbögen are Überfangbögen, which are transverse to the main direction of a room and stabilize the two opposing walls against each other.
The 15th century Collegio della Mercanzia has an unusual wood paneling covering the walls and the ceiling. Such equipment is usually known only from the northern, colder countries.
The Audience Hall ('Sala dell' Udienza ') of the Collegio del Cambio is one of the finest and best-preserved secular interiors, dating from 1452. It is located in the western part of the palace. In the Middle Ages, a big trading city like Perugia was a way to exchange the different currencies that met here. The 1496-1500 created wall and ceiling paintings come from Perugino and possibly even by his student Raffael.