The present municipal building is designed by the architect Francesco Lanfranchi (1663) right on the site of the former municipal building of medieval origin. Lanfranchi received in 1659 the task of designing and building a new town office, right on the then called "Herbs" square, which a century later Benedetto Alfieri will transform into the present City Palace Square. Half of that year was laid by the archbishop of Turin Giulio Cesare Bergera, the first stone in the presence of Duke Carlo Emanuele II and his mother, Madama Reale Cristina of France and in 1663 the work was finished