The tripto catalogue includes all 23 Polish national parks plus selected places within them. They are the country's most valuable natural areas: from primeval forest to shifting dunes and Tatra ridges.
Białowieża National Park is Poland's oldest national park and the last primeval lowland forest in Europe (UNESCO since 1979); you can see European bison in the Bison Show Reserve, while the strict reserve can only be entered with a licensed guide. Tatra National Park covers Morskie Oko, Rysy and Giewont. In Słowiński National Park, shifting dunes move 3–10 metres a year between Łeba and Rowy. Bieszczady National Park is the largest mountain park in Poland, with its poloniny meadows and Tarnica. Biebrza National Park is the country's largest (592 km²) – home to about 400 elk and 270 bird species. Kampinos National Park, just outside Warsaw, has about 360 km of trails and free entry.
Most parks in the catalogue are in Lesser Poland (Tatra, Babia Góra, Gorce, Pieniny, Ojców) and Podlachia (Białowieża, Biebrza, Wigry, Narew).
In practice: allow half a day to several days per park. Tickets usually cost 10–11 zł per day (reduced half price), and children under 7 enter free; some parks only charge in season, such as Słowiński from May to September. Kampinos and Wielkopolski are free. Stay on the marked trails – walking off them is prohibited.