The canton of Neuchâtel is delightful territory for keen walkers, the best of which is a quite spectacular natural basin (cirque). Creux-du-Van can be approached by car from the Val de Travers, a spot of wondrous beauty where Genevan philosopher Jean-Jacques Rousseau walked regularly preparing theories. Then, on foot, head left at Noiraigue and on the ‘path with 14 bends’ to find the immense nature reserve measuring approximately 1,400 meters wide and 150 meters in depth. The walk is not for the faint hearted especially if you try the ascent through the basin and up the side path, the Sentier du Single. Those who do, however, can prepare themselves for most magnificent views across Lake Neuchâtel to the Alps.