Impenetrable old forest listed as UNESCO World Biosphere Reserve in 1977, is one of the biggest such a Reserve in Europe.  Mostly known as the area of living of European Bison, close cousin of American one, forest became an excellent place to observe how they live in natural envirement. Broadleaved and coniferous forests, humid locations, alder swamp forests and riparian forests as well as a variety of animals types it is a paradise for nature admirer.