Mont Blanc (4,807 m / 15,771 ft) is the highest summit in the Alps and all of Western Europe. It straddles the France–Italy border between Chamonix (Haute-Savoie) and Courmayeur (Aosta Valley). The massif includes Aiguille du Midi, Aiguille Verte, and the Mer de Glace glacier. It is the centerpiece of the Mont Blanc massif and a mecca for alpinism, skiing, and tourism.