The village of Smoleń lies in the Kraków-Częstochowa Upland, on the eastern edge of Silesia, near the village of Pilica. Smoleń is known primarily for the castle, which, although much ruined, is one of the most picturesque and attractive fortresses located on the Eagles' Nests Trail. Its tower dominating over the forest is the landmark of the local landscape. The castle is situated with the area of the nature reserve also called Smoleń.