This mountain road features dozens of hard switchback turns, coming and going, between the Ligurian coast of Italy (Italian Riviera or Riviera del Fiore) and the Piedmont plateau (near Cuneo). The scenery is beautiful, although a bit difficult to enjoy if you are the one doing the driving! Popular also with motorcyclists, bicyclists (this route is used in mountain bike races), and hikers. Beware of closures in the winter, and for road construction in summer. It seemed to have suffered some damage near the summit on the Ligurian side when we went through and there were single-lane closures at places. The long tunnel near the summit is really a scary thing - once open to unrestricted two-way traffic! There is a scenic train ride through here (Nice-Breil-Cuneo, or Ventimiglia-Breil-Cuneo) that is quite breathtaking. This is one of the oldest, most historic routes from the coast to Italy's northern interior, dating back to the Phoenicians and Romans.