Switzerland is the land of the Alps, in central Europe. The highest peak is Dufourspitze at 15,203 ft (4,634 m) on the Swiss side of the Italian border. Most of Switzerland is composed of a mountainous plateau bordered by the great bulk of the Alps on the south and by the Jura Mountains on the northwest. The country's largest lakes—Geneva, Constance (Bodensee), and Maggiore—straddle the French, German-Austrian, and Italian borders, respectively. The Rhine, navigable from Basel to the North Sea, is the principal inland waterway.