Visit the Postojna Cave and Predjama Castle on a full-day trip with transportation from Koper.

Explore the best-known cave in the world and see why it is the greatest tourist attraction in Slovenia. Ride an underground electric train through a fantastic web of tunnels, passages, galleries and halls at one of the world’s largest karst monuments.

Travel to the idyllic village of Predjama and admire the castle that has been perched up in the middle of a vertical 123-meter high cliff for more than 800 years. As the only preserved cave castle in Europe, the Predjama Castle offers a unique insight into the building techniques and resourcefulness of people in the Middle Ages.