There are two major arteries leading to Lac Léman, one entering from the north via Bern and Fribourg (A12), the other arcing over the north shore of Lac Léman from Geneva to Lausanne (A1), then to Montreux and on south through the Alpes Vaudoises toward the Col du Grand St-Bernard (A9) in Canton Valais. They are swift and often scenic expressways, and the north-shore artery (A1 and A9) traces a route that has been followed since before Roman times.