You go to a labyrinth of karst caves. The description of this place says that it amazes with its vast halls, tunnels, corridors. Extreme sports fans will also enjoy overcoming various climbs and descents. The nearest settlement to this Slovenian landmark is the city of Postojna. The Pivka River was formed by a system of caves, it flowed under its arches for hundreds of thousands of years.

Its peculiarity is that it is located in a cave, and in the literal sense of the word. Its rocky cliff is a supporting element of the building, and it itself closes off a huge entrance to the cave. The castle became state property only after the end of World War II, since then it has been restored. The building is one of the best attractions, today it is used as a museum for excursions, as well as weddings.