 In later years, it became known as "Cerretum" for short.The cardo maximus (or "via principalis"), of the ancient castrum roughly coincides with via Vittorio Emanuele II, the current main street.After the complete defeat of the Salassi and the peace treaties, the castrum rapidly became a main business crossroads and several houses, initially wooden then in bricks and stones, were built around the military camp.