The north-east corner of Poland is a natural treasure chamber, with famous areas like the Biebrza and Bialowieza. The Biebrza and its marshes form central Europe's most pristine lowland river ecosystem. Likewise, Bialowieza National Park is famous for being the last primeval lowland forest left in Europe. These areas, together with the many other natural areas nearby, form one gigantic nature-rich region, in which wild Bison, Wolves and Elks roam, and many rare birds, dragonflies, butterflies and wildflowers can be found. This Crossbill Guide describes 20 routes and 5 sites to discover Northeast Poland's nature and scenery. It is complemented with extensive background information on landscape, flora and fauna and tips to observe wildlife.