Beyond Sarre the road continues past the castles of Saint-Pierre (17th century; inside is the Scientific Museum with records of animals and plants, found in the Aosta valley), Sarriod de La Tour (14th century) and the Tour Colin (13th century). It then passes the junctions of the Val de Rhêmes and the Val Grisanche which run south to the French
frontier, and enters the wild defile of Pierre Taillée (waterfalls); beyond this, on the hillside to the right, is the village of La Salle (1,001m/3,303ft), with the castle of Chaptelard (1,171m/3,864ft; 13th century); ahead the towering mass of Mont Blanc can be seen.