Join the more than 37 million travellers from all over the world who have visited the Postojna Cave, a world-famous attraction and the queen of karst caves. The legendary cave train will take you on a beautiful journey under the earth's surface inside Postojna Cave. If you are planning on visiting the Postojna Cave, create a plan for a short active holiday in the pristine nature, discover other karst wonders and do not miss the top experiences that the Green Karst has to offer.