Sion - Rue de Grand-Pont / Town Hall

In the main street of Sion, Rue du Grand-Pont, which is built over the conduited river Sionne, is the Hôtel de Ville (Town Hall, 1660), with an astronomical clock. Built into the hall on the ground floor are a number of Roman inscribed stones, including one of A.D. 377 which is the earliest evidence of Christianity in Switzerland.