Leysin is a municipality of the canton of Vaud in the Aigle district of Switzerland. It is first mentioned around 1231–32 as Leissins, in 1352 as Leisins. Located in the Vaud Alps, Leysin is a sunny alpine resort village at the eastern end of Lake Geneva in proximity to Montreux, Lausanne, and Geneva. In earlier years, Leysin was known for its TB sanatorias; today it is most famous for spectacular Alpine views across the Rhône Valley towards the Dents du Midi and year-round mountain sports and recreational facilities.