Mountain massif, Europe. Located in the Alps on the borders of France, Italy, and Switzerland, it is Europe's highest peak, at 15,771 ft (4,807 m). It was first climbed in 1786 by Michel-Gabriel Paccard and Jacques Balmat. Mont Blanc Tunnel, 7.3 mi (11.7 km) long and one of the longest vehicular tunnels in the world, connects France with Italy. The region has become a major tourist and winter sports centre.