This imposing structure built in 1789, with a gambrel roof, also called a “Mansard” roof, is comprised of two stories of barns and two stories of cellars. Relays had to be able to accommodate a large number of hitches. For the Grandvallier “rollers” (road hauliers), who worked independently or on behalf of “rolling firms”, these relays were vital stop-offs. At the height of the rolling period, during the mid-19th century, rolling firms such as the famous Maison Bouvet established their own relays in major cities.