Postojna Cave & Castle Adventure with Roundabout Travel
Difficulty
easy
Duration
3–4 hours
Fitness Level
Minimal physical exertion needed; suitable for most fitness levels with basic mobility.
Overview
Descend into one of Europe’s grandest karst caves and visit a cliffside medieval fortress on a seamless half-day adventure from Ljubljana. Postojna Cave and Predjama Castle await with geology and legend in equal measure.
Postojna cave & castle (half-day) trip
5.5 hours | All ages
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Adventure Photos
About This Adventure
Explore the enchanting Postojna Cave, the world's most famous karst cave, on a guided tour featuring an electric train ride through stunning underground formations. Then, marvel at the breathtaking Predjama Castle, perched dramatically in a hillside cavern, and uncover the legend of the Slovenian Robin Hood. A truly unforgettable adventure awaits!
The mystic underground of the Postojna Cave, most prominent karst cave in the world, with the Predjama Castle, listed among the Guinness World Records as the largest cave castle
Duration
5 hours and 30 minutes
About
The mystic underground of the Postojna Cave, most prominent karst cave in the world, with the Predjama Castle, listed among the Guinness World Records as the largest cave castle.
The guided tour of Postojna Cave will consist of a ride by electrical train and a walk through beautiful underground passages and chambers with spectacular drop stones, pillars, limestone curtains, and other natural stone forms.
Continue to the idyllic village of Predjama, where you will be amazed by our fairy tale medieval Predjama Castle, famous for its dramatic setting in the gaping mouth of a cavern halfway up a hillside. Learn about the legend of the knight Erasmus – ‘Slovenian Robin Hood’, and return back to Ljubljana in late afternoon hours.
Included in price
Professional English speaking guide, entrance fees for Postojna cave and Predjama castle, comfortable transportation and organization
Not included
Meals and personal expenses
Example itinerary
8.30 Start of picking up in Ljubljana 10.00 Guided tour of Postojna cave 11.45 Guided tour of Predjama castle 14.00 Arrival back to Ljubljana
*Please bear in mind that we have multiple pick-up points so it may take up to 15 - 20 minutes for the guide to get to you.
Adventure Tips
Wear comfortable, sturdy shoes
Surfaces inside Postojna cave can be slick and uneven, so good footwear is a must.
Bring a light jacket
The cave maintains a cool 8-10°C year-round, making it chilly compared to surface temperatures.
Allow time for cave train seating
The electric train through the cave has limited seats, so joining guided tours helps guarantee entry.
Photography restrictions apply
Flash photography is generally prohibited inside the cave to protect delicate formations and wildlife.
Local Insights
Wildlife
- Proteus anguinus (olm), an aquatic cave salamander endemic to the area
- Common buzzard soaring above the castle cliffs
History
Predjama Castle’s history dates back to the 13th century and is famous for its connection to Erazem Lueger, a legendary knight and outlaw.
Conservation
Strict visitor regulations protect the delicate cave ecosystem, especially its unique fauna like the olm, and efforts maintain the castle’s structural integrity amid tourism.
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Adventure Hotspots in Ljubljana
Frequently Asked Questions
Recommended Gear
Waterproof walking shoes
To navigate uneven, sometimes wet cave floors and trail approaches comfortably.
Light insulated jacket
For warmth inside the consistently cool cave and cooler outdoor temperatures.
fall|winter|spring specific
Headlamp or flashlight
Useful if you want additional light during gaps in cave lighting, but generally optional as lamps are provided.
Camera without flash
To capture exterior castle views and cave formations while respecting restrictions on flash.