6 hour(s)
English
Included
Explore the world-famous Postojna Cave with an underground train ride
Walk through stunning chambers, tunnels, and unique stalactite formations
See delicate “spaghetti” stalactites, pillars, and other geological wonders
Visit the dramatic Predjama Castle perched in a 100-meter cliff
This activity is managed by our trusted partner FareHarbor.
Additional taxes and fees may apply — total shown at checkout.
Select your preferred date and time from the calendar above.
Free cancellation and unlimited rescheduling leads to total flexibility while you plan your travels
Lowest Price Guarantee — no other provider offers this tour for less
The mesmerizing beauty of Postojna Cave and the mysterious Predjama Castle are among Slovenia’s most treasured attractions. Over millions of years, the clear waters of the River Pivka have carved a vast underground labyrinth stretching 21 kilometers, filled with grand halls, winding passages, and remarkable formations such as dripstones, translucent curtains, and towering pillars. Your journey begins with an unforgettable underground train ride deep into the cave system, followed by a guided walk through its softly illuminated, dreamlike chambers. Here, you’ll witness breathtaking natural wonders, from delicate spaghetti-like stalactites to massive stone columns shaped by time.
After returning to daylight, the adventure continues at the dramatic Predjama Castle, perched high on a 100-meter vertical cliff. Steeped in legend, this medieval stronghold once belonged to the famed knight Erasmus and is filled with intriguing stories, hidden passages, and centuries-old mysteries. The day concludes with a scenic drive through the lush Slovenian countryside as you make your way back to Ljubljana.
Transportation
English Speaking Guide
Entrance to Postojna Cave
Entrance to Predjama Castle
Audio guide in Predjama Castle
Skip the line service
Pick up and drop of service
Organization and tax
Gratuities
Comfortable walking shoes
Weather-appropriate clothing
Sunglasses & sunscreen
Wheelchair not accessible
The caves maintain a constant temperature of 10°C 50°F
Flipflops are not recommended
Confirmation will be received at time of booking
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