In the modern exposition you will get acquainted with the Karšuva forest, the Viešvilė stream and the surrounding wetlands. Here you will find the answer to why the water in Viešvilė stream is brown and you will see a 1000-year-old section of the swamp. Most of the nature reserve is inaccessible to visitors due to the strict protection status. This majestic place is a part of the prestige of the country. It’s like an indicator of whether we are able to preserve old forests.