The Nobile Collegio del Cambio is the preserved headquarters of Perugia's money-changers' guild, tucked into the Palazzo dei Priori just off Corso Vannucci. It is a small interior, but an exceptional one: carved wooden stalls, a legal chamber, and the Sala dell'Udienza, where Perugino covered the walls with calm, luminous Renaissance frescoes.
Do not skip it because it sounds administrative. The room is one of the places where Perugia's civic wealth, banking history, and artistic ambition meet in a space you can take in almost at once. It pairs naturally with the Galleria Nazionale dell'Umbria upstairs, but it has a quieter, more private charge.