The natural exhibition is situated in the headquarters’ building in Krzywe.  The exhibition consist of few parts, displaying forest and water ecosystems, man habitation on Lake Wigry (cultural values) and education activity. In exhibition room aligned are  tree trunks and among them you can see birds and mammals living in The Augustowska Primeval Forest. In the middle of the room there is an aquarium with native fish species. The part of exhibition called “on time axis” presents the most important events in history from glacier recession until nowadays. In exhibition room there are also attractive educational games.  The exhibition is accommodated for disabled persons.