Day trips from Ljubljana will also take you to world-renowned tourist spots such as Postojna Cave, which has been visited by over 40 million guests over the last two hundred years. With its 24 kilometers, it is also the most extensive cave system in Slovenia.
A great feature of Postojna Cave is that you take a ride to the magical underground with a unique miniature electric train. After a four-kilometer drive, you get off a train and continue the guided tour on foot. The underworld will impress you with stalagmites, stalactites, and other cave formations with the standing out 5-meter tall dripstone pillar named Brilijant, which fascinates with its shiny white and silver color.
A special feature is also the cave hall, which hosts many musical concerts, as it has outstanding acoustic characteristics. At the end of the tour, you will be able to see the Olm, the world-famous resident in the Postojna Cave. The 30 centimeters long human fish lives only in this part of the world. To find out more about the Olm, you can visit the Proteus Cave with Vivarium, which, in addition to EXPO Cave Karst, is also a big attraction in the Park.