The Valais (German: ) is one of the 26 cantons of Switzerland in the southwestern part of the country, around the valley of the Rhône from its headwaters to Lake Geneva, separating the Pennine Alps from the Bernese Alps. The canton is one of the drier parts of Switzerland in its central Rhône valley. Paradoxically it is also one of most well-watered parts, having large amounts of snow and rain up on the highest peaks found in Switzerland. It is perhaps best known worldwide for the Matterhorn.