Książ Castle is a huge architectural complex on a scale unique in Europe, situated on a rocky promontory deep in the forest. By virtue of its rich history and remarkable size, the building has been entered on the list of historic sites recognized by the National Heritage Institute, is found on the Piast Castles Trail, and to this day is an essential testimony to the events of the past. As a residential complex, Książ is recognized as the third-largest castle in Poland and the largest in Lower Silesia.