Lake Sils is the largest lake in Graubünden and, together with lakes St. Moritz, Silvaplana and Champfèr, forms the Upper Engadine chain of lakes. During the summer months, Europe’s highest passenger boat service operates on lake Sils
Lake Sils (Romanic: Lej da Segl) lies on a high plateau at an altitude of 1800 m, immediately by the watershed of the Maloja pass, the crossing into the Bergell valley. An idyllic hiking and cycling route circumnavigates the lake. The Upper Engadine lakes tour is one of the classics of the Upper Engadine walks: starting from Maloja, the walk passes by lakes Sils, Silvaplana, Champfèr and St. Moritz and ends in the world-famous resort of St. Moritz.