Katzensee, Switzerland

"Chatzesee" is the Swiss German name of the lake that is a remnant of the Linth glacier, in fact two small idyllic lakes which are connected by an artificial canal. The surrounding fens are the habitat for rare plant communities and a variety of animals, and are classified as a protected area; rubber boats and air mattresses are therefore not allowed. The bathhouse at the so-called lower lake interrupts the otherwise dense reed beds and allows the restricted public access to the water. Equipped with an appropriate infrastructure, lawns with shade trees, barbecue areas and a children's playground, the beach is very popular because the entrance is free.
Article Taken from the site https://en.m.wikipedia.org/wiki/Seebad_Katzensee