Haus Idyll
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Absolutely amazing lake. It's the highest situated bathing lake in Carinthia. The lake can reach 24 degrees C in summer, while in winter the water freezes over completely and allows for ice skating. There are plenty of nice restaurants and hotels, while the eastern part is more wild and almost uninhabited. Weissensee offers public bathing spot (paid entrance) with facilites, boat trips and water sports.