Erosion caused the mountain to collapse and the vast, pale yellow and reddish rock basin to form, which becomes bigger every year. From the Grabenrad or the Illhorn (2,716 m) there are "fear inspiring" yet stunning views down into the Rhone valley.
A natural spectacle in a class of their own are the 600m long Engstligen waterfalls. Under preservation since 1948, these are the second longest falls in Switzerland.
The Lac de Neuchâtel lies at the southern foot of the Jura mountains. The northern shore of the lake is characterised by vineyard landscapes, the southern shore by the largest marshland and bird paradise in Switzerland. Boat cruise enthusiasts can experience all three lakes at the periphery of the Jura – lakes Biel, Murten and Lac de Neuchâtel – on a leisurely, four-hour cruise.
Lake Lugano is at the southernmost tip of the Tessin, the holiday region south of the ridge of the Alps, and it reaches its arms out into Italy. Thanks to the mild Mediterranean climate, there are even citrus fruit trees growing here, and visitors can sunbathe under palm trees.