Sala della Vaccara is on the north side of Palazzo dei Priori, on the site of the former church of San Severo. It was built around 1339 and it was seat of the first archive of the Municipality.It is a cross vaulted hall with ribs and houses segments of frescos on patron saints of commercial traffics and craft activities. On the back wall a fresco of Madonna with Child and saints painted by Tiberio di Assisi (Umbrian school XV Century).