National Parks · Our pick
Postojna Cave
Underground railway
One of Europe’s great show caves, explored by underground train and then on foot.
Photo Credit
Image courtesy of © Jakub Hałun · CC BY 4.0 via Wikimedia Commons
Photo Credit
Image courtesy of © Shesmax · CC BY-SA 4.0 via Wikimedia Commons
Photo Credit
Image courtesy of © Shesmax · CC BY-SA 4.0 via Wikimedia Commons1 / 3
About Postojna Cave
Visitors have been marvelling at Postojna Cave for generations, and the adventure still begins aboard the world’s only double-track cave railway; the first train ran underground here in 1872. The ride is followed by an easy walk through vast halls of formations, past the gleaming white stalagmite known as the Brilliant, about an hour and a half in all. Guides speak Slovenian, Italian, English or German, with audio guides in 19 languages. In the Vivarium, meet the olm, the cave’s pale “baby dragon”. The cave is a steady 10 °C, so bring a warm layer; it opens every day.
Our take
- About 24 km of passages
- Underground train ride
- The olm in the Vivarium
- Address
- Postojna, the Balkans
- Website
- postojnska-jama.eu
- Our city guide
- On our Ljubljana guide
- Price guide
- €€€ (national parks price guide)
Opening hours, prices and seasonal openings change, so please check with Postojna Cave before you go.
Last checked: October 2026 How we choose
Location
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