
Postojna Cave and Predjama Castle - Entrance Tickets Included
Traveler rating
4.8/5
Based on 1,182 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Postojna Cave and Predjama Castle - Entrance Tickets Included worth booking?
Postojna Cave and Predjama Castle - Entrance Tickets Included is a 6-hour experience in Ljubljana, Slovenia, from $130 per person. It scores 90 out of 100 on the Outty Ranking, which we label “90+ Club”, based on a 4.8/5 rating across 1,182 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing. It sits in the Outty 90+ Club, the top tier of everything we rank.
- Outty Ranking
- 90 / 100
- Rating
- 4.8/5 (1,182)
- Duration
- 6 hours
- From
- $130 per person
On this day we take you to the biggest and worldwide known Slovenian cave system - the Postojna caves. Amazing two million years old and 21 km long system of underground caves is one of the most easily accessible networks of underground caves in the world. First, you will experience the ride by electric train, after that, a guided walk will follow through a series of cave halls with drop stones, pillars, and translucent curtains that create unforgettable impressions. The underworld system is home to the mysterious, unique, and rare amphibian Proteus Anguinus, or "baby dragon" as it is popularly called here. Back in the daylight, the trip will continue towards the astonishing castle of the robber knight Erasmus. For centuries dramatically hanging in over a 100-meter-high vertical cliff, it's waiting for you to enter and discover its secrets, legends, and myths. Driving through the green scenery, we return to Ljubljana.
What you get
About this experience
On this day we take you to the biggest and worldwide known Slovenian cave system - the Postojna caves. Amazing two million years old and 21 km long system of underground caves is one of the most easily accessible networks of underground caves in the world. First, you will experience the ride by electric train, after that, a guided walk will follow through a series of cave halls with drop stones, pillars, and translucent curtains that create unforgettable impressions. The underworld system is home to the mysterious, unique, and rare amphibian Proteus Anguinus, or "baby dragon" as it is popularly called here. Back in the daylight, the trip will continue towards the astonishing castle of the robber knight Erasmus. For centuries dramatically hanging in over a 100-meter-high vertical cliff, it's waiting for you to enter and discover its secrets, legends, and myths. Driving through the green scenery, we return to Ljubljana.
What's included
Included
- Entrance to Postojna cave
- Pick up and drop of service in central Ljubljana
- Entrance to Predjama Castle
- Audio guide in Predjama Castle
- Skip the line service
- In-vehicle air conditioning
- English Speaking Driver/Guide
Not included
- Food and drinks
- Your personal expenses
What you'll see and do
Postojna Cave
Postojna cave entrance fee
90 minutes here · Admission included
Predjama Castle
Predjama Castle entrance fee
60 minutes here · Admission included
Where it starts and ends
Hotel pickup
Pickup is included for all travelers.
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 15 travelers per booking
- Operated by
- To do in Slovenia
Know before you go
- Public transportation options are available nearby
- Specialized infant seats are available
- Suitable for all physical fitness levels
- There is a constant temperature of 10°C (50°F) in the caves, dress properly, and wear comfortable shoes (flipflops are not recommended).
- The minimum number of participants must apply. There is a possibility of cancellation after confirmation if there are not enough passengers to meet requirements. In the event of this occurring, you will be offered an alternative date/tour or full refund.
- In case you fail to provide us with a desired meeting point up until 24h before departure, your meeting point will be the City hotel (Dalmatinova 15, 1000 Ljubljana)
- Child rate applies only when sharing with 2 paying adults.
Photos






What travelers are saying
Outty’s summary of the themes that recur across 1,179 traveler reviews. Written by us, not quoted from reviewers.
The guide
5 mentionsTravelers single out the guide as the reason the experience works.
Knowledge and storytelling
3 mentionsReviewers describe the commentary as informative rather than scripted.
Organization
2 mentionsPickup, timing, and logistics are described as running smoothly.
Traveler reviews
1,179 verified traveler reviews for Postojna Cave and Predjama Castle - Entrance Tickets Included. Ratings and reviews provided by Viator and Tripadvisor.
Our guide was very...
Our guide was very attentive and friendly throughout the entire tour. He was always smiling and made an effort to provide detailed information about both the castle and the cave. Thank you 😊
via Viator
Best of Slovenia
Great tour, when in Slovenia this shoul be the top priority place to visit.
via Tripadvisor
Must-see caves & castle tour!
Two fantastic stops! Postojna Caves and Predjama Castle are must-see stops while in Slovenia. Our tour guide Miha was great! He was friendly & well-organized. He told us many fascinating things about Slovenia & the region we were visiting, including info about history of the caves & castle, the local geography, way of life for the villagers. He made the drive fly by with all his interesting stories. The local guide in the caves did a nice job & the audio tour was full of facts at the castle. I loved these 2 stops.
via Viator
Would recommend
Good tour with Veronica. Only had an hour at the castle but got to see most of it. Caves were good to see.
via Viator
Very good one full day trip
Varied, it’s different venues. Interesting enough.
Response from the operator: Thank you for sharing your thoughts on the variety of the venues! It can certainly be a bit of a mixed bag when a itinerary hops between very different locations, but we are glad you found the selection interesting enough to make for an enjoyable experience overall. Having that contrast between different stops is always what we aim for, even if some venues hit the mark more than others depending on personal preference. Thank you once again for providing such consistent, honest, and helpful feedback across all your reviews. Your detailed perspectives on everything from individual guides and logistics to drivers, timing, and sights have been fantastic to read, and we truly appreciate you taking the time to share your journey through Slovenia with us!
via Tripadvisor
Good to know
- Duration
- 6 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Hotel pickup
- Included for all travelers
- Booked in 30 days
- 414
- Verdict
- 90+ Club
Who runs this experience
Operated by To do in Slovenia, who run 17 experiences we rank across 1 city, with an average Outty Ranking of 72.0 and 1 in the 90+ Club.
See everything To do in Slovenia runsWhy this scores 90
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Postojna Cave and Predjama Castle - Entrance Tickets Included: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Ljubljana.
How much does Postojna Cave and Predjama Castle - Entrance Tickets Included cost?
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Prices start at $130 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Ljubljana usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Postojna Cave and Predjama Castle - Entrance Tickets Included take?
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Plan for about 6 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Ljubljana is not rushed.
Is Postojna Cave and Predjama Castle - Entrance Tickets Included worth it?
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It holds an Outty Ranking of 90 out of 100, which we label "90+ Club". That score blends traveler sentiment (4.8/5 across 1,182 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable most popular in Ljubljana, and how flexible the cancellation terms are. Scoring 90 or above puts it in the Outty 90+ Club, the top tier of everything we rank.
Can I cancel or reschedule Postojna Cave and Predjama Castle - Entrance Tickets Included?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Postojna Cave and Predjama Castle - Entrance Tickets Included suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 6-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Postojna Cave and Predjama Castle - Entrance Tickets Included?
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Around 414 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Ljubljana can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Ljubljana and add a light layer if any part of the 6-hour experience runs outdoors or after sunset.
Where does Postojna Cave and Predjama Castle - Entrance Tickets Included start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Ljubljana within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Ljubljana?
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On Outty we rank every Ljubljana experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama, Ljubljana Small Group Food Walking Tour, Classic Ljubljana Group Tour. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Ljubljana?
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Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Ljubljana?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
What is included in Postojna Cave and Predjama Castle - Entrance Tickets Included?
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Included: Entrance to Postojna cave; Pick up and drop of service in central Ljubljana; Entrance to Predjama Castle; Audio guide in Predjama Castle; and Skip the line service. Not included: Food and drinks; and Your personal expenses. Always check the voucher for the final list before you travel.
Does Postojna Cave and Predjama Castle - Entrance Tickets Included include hotel pickup?
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Yes, pickup is offered for every traveler from 4 listed pickup locations in and around Ljubljana.
What languages is Postojna Cave and Predjama Castle - Entrance Tickets Included offered in?
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It runs in English. Pick your language when choosing a date and time, as not every departure runs in every language.
Will I get instant confirmation and a mobile ticket for Postojna Cave and Predjama Castle - Entrance Tickets Included?
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Confirmation is sent by the operator after booking, usually within 48 hours; if it is not confirmed you are not charged. Mobile tickets are accepted, so you can show the voucher on your phone.
Is Postojna Cave and Predjama Castle - Entrance Tickets Included wheelchair or stroller accessible?
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The operator notes: Specialized infant seats are available. If accessibility is critical, contact the operator after booking to confirm arrangements for your date.
What happens to Postojna Cave and Predjama Castle - Entrance Tickets Included if the weather is bad?
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It generally runs rain or shine, so dress for the forecast in Ljubljana. Standard cancellation terms apply: free cancellation up to 24 hours before the start.
What do travelers say about Postojna Cave and Predjama Castle - Entrance Tickets Included?
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Across 1,182 reviews averaging 4.8 out of 5, recurring themes include the guide, knowledge and storytelling, organization. Travelers single out the guide as the reason the experience works.
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