The Finsteraarhorn is a mountain lying on the border between the cantons of Bern and Valais. It is the highest mountain of the Bernese Alps and the most prominent peak of Switzerland. The Finsteraarhorn is the ninth-highest mountain and third-most prominent peak in the Alps. In 2001 the whole massif and surrounding glaciers were designated as part of the Jungfrau-Aletsch World Heritage Site.