The Mont-Blanc, Europe’s rooftop, is a massif in the Alps, shared between France, Italy and Switzerland. Mont-Blanc is the highest massif of Western Europe and its height often creates a debate. For a long time, it was estimated at 4 807 meters high, its altitude often changes due to weather and time. In 2007, measurements were made by a team of experts from Haute-Savoie and measured the mountain at 4 810 meters.