Visit two of Slovenia’s top attractions in one afternoon on this small-group, half-day tour from Ljubljana. Begin at Predjama Castle, perched on a cliff high above the beautiful Inner Carniola region. Explore the chambers and stairwells and learn about the castle’s most famous resident, Erazem of Predjama. Then, continue to Postojna Cave. Ride a mini-train deep into the famous cave and tour the ethereal network of stalactites, stalagmites and caverns with a local guide. Numbers limited to eight people, ensuring a personalized experience. Postojna Cave is the best-known cave in the world. It is also the greatest tourist attraction in Slovenia and one of the world's largest Karst monuments and it is a must-see attraction when visiting Slovenia. You will start the tour with a unique and adventurous ride with a special train in one of the most diverse cave systems in the world, with 21 km of passages, galleries and magnificent halls, which offer an unparalleled experience of the underground world and a large diversity of underground animals – including the world-famous human fish (proteus anguinus). Beside Postojna Cave you will also have the chance to visit Predjama Castle. Our guide will show you this magnificent medieval castle perched high up in a vertical cliff in the idyllic village of Predjama. It is an interesting and romantic sight throughout the year: in the spring and summer its surroundings are abundant with blossoms and flowers, in the autumn it is clad in the colours of surrounding forests and it is at its most enchanting in the winter when the surrounding area is covered in snow.
Prices change with the date; the lowest is shown.
From the operator’s live schedule on Viator, checked Oct 11.
Tour of Predjama Castle
Tour of Postojna cave
Reviews collected by Viator and Tripadvisor
Excurgo comparison of 431 Viator tours, recalculated daily.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Ljubljana: Postojna cave & Predjama castle small group tour lasts about 5h 30min. The itinerary has 2 stops.
Prices start at $78 per person for this Ljubljana experience, booked through Viator with the price shown before checkout. There is 1 booking option, so the final price depends on the option you choose.
According to the operator’s current schedule, it runs every day, starting at 8:20 AM.
Children aged 0–12 pay from $46, adults from $78.
Yes. Cancel at least 1 day before the start for a full refund. Later cancellations are non-refundable.
The meeting point is opposite City Hotel. Hotel pickup is not part of this experience.
The experience is available in EN.
It is a small-group experience with a maximum of 8 participants.
Not wheelchair accessible.
Yes, bookings are confirmed instantly.
Travellers rate it 4.8 out of 5 across 174 reviews on Viator and Tripadvisor; it is run by Gray Line Slovenia I Slovenia Explorer.
Reviews collected by Viator and Tripadvisor
A great trip combining two excellent places. Mini bus very comfortable and plenty of space. Brilliant communication and clear instructions from Viator from booking til the morning of the trip. Easy to find meeting point. Caves were incredible and the castle very interesting. Well worth visiting.
Caves were amazing, highly recommend. Our tour guide was excellent. We had sick kids and luckily ended in private family tour only. He was accommodating and knowledgeable. Went to castle for a quick visit. Amazing
Sick kids and travel are a tough mix, Ruben, so we are glad the day could bend around your family and that the guide read the situation well. That is the quiet advantage of a small group, when numbers are low the day becomes yours. Hope everyone was back on form soon, and thank you for the recommendation 🙏
The walk in the cave is not for the faint of heart several km and a large crowd of people at each stop, but was very pretty and would still recommend! The train into the cave was like a Disney ride but slower. Would recommend bringing a snack as the tour day is packed tight.
Honest descriptions like yours are exactly what help the next traveller decide, Tammy, so thank you for writing one 🙏 The cave is a few kilometres on foot once the train drops you off, and in high season the timed groups inside are busy, that part is the cave's to manage, not ours. Glad it still earned a recommend, and the snack advice is a good one for a day this full.
A fantastic trip to the cave and castle. The cave is very crowded but everyone moves along at a good pace. We loved the castle and the whole setting of it is spectacular. Our guide Andreas was fantastic- very informative and knowledgeable and we learnt so much about Slovenia. He ensured we had a great time.
Thank you, Anne. Postojna does draw a crowd, so we are glad the pace kept things moving and that Predjama, with that setting built into the cliff, more than made up for it. Learning so much along the way is exactly what a good guide adds, and we are so glad yours did. Come back and see more of Slovenia sometime.
We had a great day with Luka despite the rain. They came to her was amazing. It was so fun to ride the train into the cave and then spend an hour walking around looking at the amazing formations that took millions of years to form. The guides were very informative and didn't rush you get plenty of time to take pictures which we did a lot of. From there we went to the castle that is built into a cliff which was extremely beautiful. Lucas very knowledgeable and told us about the history of Slovenia and the castle in the surrounding area. On the way back the traffic was at a complete stand still on the freeway. Luca checked his GPS and drove us through the countryside which was a lot better views and a much more enjoyable drive and he's saved at least an hour of time that we would have been sitting in traffic. It was a really fun day and we had enough time to enjoy everything we did.
Thank you, Alexandria, what a great account of the day. Rain or shine, the cave and that cliff castle deliver, and we love that you had time to actually take your photos rather than being hurried through. And the traffic save is exactly the kind of quick thinking we hope for, turning a standstill into a nicer drive through the countryside and an hour back in your day. So glad it was such a fun one, and we will pass your thanks to your guide.
Very comfortable seats on van. Great and entertaining guide! Great tour. Highly recommended it to anyone
Thank you, Pamela. Comfortable seats and a guide who keeps the day entertaining make more difference than people expect on a full day out, and we are glad both worked for you. Thank you for the recommendation, and safe travels onward.
Prompt arrival, smooth intros, delicious deep voice. Safe driving in air con comfort. Clear communication and flexible with arrangements. The advice and steps to complete beforehand were accurate and basic. Take cash for the pletna (row boat) bring a jumper for the caves, bring a sandwich for lunch. The weather, the views, the guide, the chat and the added adjustment to do summer toboggan was fabulous. Jan works hard, but knows what's what and shares it with a smile.
Thank you for packing so many useful tips into one review, future guests will be grateful. The toboggan add-on is a good example of how our set route still flexes to what the group wants on the day, glad it all came together so smoothly.
While this is essentially paying for a ride to the caves and castle, it is still worth booking (the tickets for the actual caves and castle are NOT included, and the driver/guide does NOT come with you into the caves or castle). The van was very comfortable and our driver was knowledgeable (gave us information during the drive and outside of the castle), helpful, and well-organized. Again, the caves are so incredible I still think this is worth booking if you want to travel comfortably.
Thank you, Michaela. We are glad the day was worth it, and that the comfortable van and our guide made it easy and well-organised. For anyone weighing the cost: what's always included is the guided day itself, a licensed local guide-driver, and the comfortable van, a small group of up to 8 rather than a big coach. Groups are often smaller too, and we run the day even for two guests rather than cancel. The cave and castle admissions are kept separate and optional, so you only pay for the stops you choose, with prices shared upfront. One thing worth knowing: inside Postojna Cave only the cave's own specialised guides are allowed to lead, so ours shares the background on the drive and waits outside, ready with more once you're out. That also keeps an extra entry ticket off your bill. Thanks for laying it out so clearly; that honest detail helps the next traveller decide.
Prompt pickup. Friendly, organised and informative guide. The caves are particularly touristy but are well organised and therefore still worthwhile. some more elderly tourists struggled a little with the walk at the caves and the steps at the castle. We found the castle, particularly interesting but at peak season, I would imagine it is chaotically busy.
Thank you, and we are really glad the cave made such an impression on you, it is genuinely one of the most remarkable anywhere. We keep the admissions and the boat optional on purpose, so each guest can tailor the day and only pay for the stops they choose, and we share the prices upfront so there are no surprises. We hope to welcome you back.
Luka was a knowledgeable guide with lots of interesting facts to share. The caves were fascinating, and the castle breathtaking.
Thank you for your lovely review!
| Tour | Duration | Rating | Price | |
|---|---|---|---|---|
| Ljubljana: Postojna cave & Predjama castle small group tour | 5h 30min | 4.8 (174) | $78 | |
 Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama | 10 hours | 4.9 (946) | $131 | View |
 Postojna Cave and Predjama Castle - Entrance Tickets Included | 6 hours | 4.8 (1,170) | $130 | View |
 Slovenian highlights - Lake Bled, Postojna Cave & Predjama Castle from Ljubljana | 10h 30min | 4.9 (141) | $136 | View |
 Postojna Cave & Photostop Predjama castle - Group Tour from Koper | 5 hours | 4.8 (38) | $154 | View |
 Postojna cave, Predjama castle and Piran tour from Ljubljana | 10 hours | 5.0 (115) | $128 | View |
 Postojna cave & Predjama castle half day – all tickets included | 5h 30min | 4.6 (119) | $121 | View |