The Janusz Kozłowski Na Torfach Nature Reserve (Rezerwat przyrody Na Torfach im. Janusza Kozłowskiego) is located in Karczew, south of Otwock, within the Masovian Landscape Park. The reserve comprises wetland forests and lake Torfy with the area of 7ha. In the old forester's house within the reserve, there is Baza Torfy – an ecological educational centre of the Masovian Landscape Park open from April until October. In the centre you can find two wolves (one stuffed and one living called Zew), an anthill in a tree stump and winter bat dormitory.