The Alps are Europe's highest and most extensive mountain range system, stretching over 1,200 km (750 miles) across eight countries:
Mont Blanc (4,808 m / 15,774 ft) on the French-Italian border is the highest peak. The range forms a crescent separating the Mediterranean climate of southern Europe from the temperate plains of the north.
Note: The Alps do not separate Europe from Asia—that's the Ural Mountains. The Alps are entirely within Europe.