For those who love discovering enchanting places, unmissable spots are breathtaking caves - a natural phenomenon situated below the surface. We recommend you visit the stunning Postojna Cave. One hundred forty years old railway will take you through the underground maze of corridors, halls, and tunnels so you can see firsthand why this karst phenomenon is considered a world-class attraction. Close to the cave is Predjama Castle. For more than 800 years, it has looked like a white dime inside the mouth of the cave complex. This largest cave castle in the world has many mysteries, among which are hidden cave entrances.
Dig a little deeper, and you will find a real natural treasure.
Hidden underground treasure
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