86-kilometer section of the Vistula River between Puławy (km 371 of the waterway) and the mouth of the Pilica River (km 457 of the waterway) covering the southern and central part of the Natura 2000 site Dolina Środkowej Wisły PLB140004. Administratively, it is located in two voivodships: Lubelskie (powiats: puławski and rycki) and Mazowieckie (powiats: kozienicki and garwoliński).
The Institute of Biological Sciences of Cardinal Stefan Wyszyński University in Warsaw has its own research station. The field station is located in Wróble near Maciejowice. At the station scientific research and teaching activities for students are conducted.
Stacja Terenowa Instytutu Nauk Biologicznych
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Wróble-Wargocin 6, 08-480 Maciejowice