Panorama photographed in a large green space next to a bench where you can rest after long walks around Lake Sils. Lake Sils is a lake in the valley of the Upper Engadine, Grisons, Switzerland. Its name comes from the village of Sils. The lake is at an altitude of 1,797 meters above sea level, between Passo Maloja and Lago Silvaplana. It is the largest lake in the canton of Grisons. An idyllic walking and cycling route around Lake Sils.