Sils Pond Nature · Sils, Selva, Girona The Estany de Sils is a wetland that corresponds to the last remnant of a former natural lake situated in the municipalities of Sils and Maçanet de la Selva (la Selva), which came to be the largest lake in Catalonia, comparable in size to the estany de Banyoles. Over the centuries, especially during the 19th century, it was gradually drained to gain farmland and out of fear of diseases such as malaria; nevertheless, the water reappeared after heavy rains, and the area retained, despite the intense transformation, a notable floral richness and an interesting aquatic fauna. At the start of the 21st century, a LIFE project promoted by the Sils town council recovered an area of lagoons and is working to strengthen the natural habitats through a more respectful management of the surrounding crops. Photo: Mikipons (CC BY-SA 3.0) What to see and do in Sils