Special feature in the Allgäu: The only Alpine lake with a real island. The Schrecksee is considered one of the most beautiful mountain lakes in the Alps.

Another lake in the Free State sets a double record: It is the warmest lake in all of Germany. There is no tourist parking lot, no elevator and no public transport - and that visitors must be in good physical condition. The eight-kilometer-long route is easy to hike due to the stream of visitors.