Lake Montsalvins is an artificial lake in the canton of Fribourg, with a capacity of 12.6 million cubic meters, and you can visit it to go for a charming walk around its fresh water, and the picnic is on a path that extends between the banks of the lake and the forest floor and the hills and crowns with a stunning view, and you will see during your wandering in the area the Montsalvins Dam, which is a structure Magnificent architecture dating back to the 1920s; This was the first double curvature (vertical and horizontal) arch dam in Europe. You may see the green peaks of the dents (dent versts) rising above Charme reflected in the waters of the lake.