Worth to know - Białowieża national park from Wikipedia:
Białowieża National Park (Polish: Białowieski Park Narodowy) is a National Park in Podlaskie Voivodeship, in Eastern Poland adjacent with the border with Belarus. The total area of the park is 152.2 square kilometres (58.8 sq mi). It is located 62 km (39 mi) southeast of Białystok (Poland). It is known for the protection of the best preserved part of the Białowieża Forest, Europe's last temperate primaeval forest fragment that once stretched across the European Plain. It is home to the world's largest population of European bison (Polish: żubr), the continent's heaviest land animals.2 The border between the two countries runs through the forest, the Belovezhskaya Pushcha National Park is adjacent on the Belarus side of the border. There is a border crossing for hikers and cyclists within the forest.
About primeval forest
An old-growth forest ? also termed primary forest, virgin forest, primeval forest, late seral forest, or (in Britain) ancient woodland ? is a forest that has attained great age without significant disturbance and thereby exhibits unique ecological features and might be classified as a climax community.1 Old-growth features include diverse tree-related structures that provide diverse wildlife habitat that increases the bio-diversity of the forested ecosystem. The concept of diverse tree structure includes multi-layered canopies and canopy gaps, greatly varying tree heights and diameters, and diverse tree species and classes and sizes of woody debris.
Old-growth forests are economically valuable, and logging of these forests has been a point of contention between the logging industry and environmentalists.
Land of primeval forest, wildlife and mix of cultures
Polish eastern borderlands are a very interesting area. This is the place where three cultures meets - Orthodox, Catholic and Muslim. Worth to know is a culture of Tatars minority - these lands were given to them by the Polish king as reward for bravery in the battle. Tatar culture is very interesting and exotic, you can taste special and very unique cuisine, see the historic wooden mosques and the old Muslim cemetery. Besides cultural values, this region is the largest natural wealth of Poland - the two largest national parks - Biebrzanski (which is best in spring) and Bialowieski - natural wealth both these places are stunning - the only one primeval forest in Europe and unique backwaters of the Biebrza River is something worth seeing .