In addition to two real islands, the lake has two floating ones as well! Theyfloat freely on a 16 square km large water body, from one bank to another. You might use them - for a "ride", although their course is often unpredictable. You should at least see them - as they are unique in the world. This is the area of exceptional importance. There are over 150km of marked walking trails and cycling paths to which you get through the habitat of blueberries and blackberries. The vegetation is lush and many natural rarities found their home here: round-leaved sundew, downy birch, yellow beech... The mounatain air and a specific microclimate will help you to rest well while walking, and enjoy the landscape from the gazebo and a watchtowers. Many sports facilities are scattered in this green vastness. The hotels also offer sports facilities.