
Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb
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September 2026
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Adults
Age 13 and over
Children
Age 12 and under
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Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.5/5
Based on 40 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb worth booking?
Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb is a 11-hour experience in Zagreb, Croatia, from $60 per person. It scores 69 out of 100 on the Outty Ranking, which we label “Solid Choice”, based on a 4.5/5 rating across 40 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 69 / 100
- Rating
- 4.5/5 (40)
- Duration
- 11 hours
- From
- $60 per person
Discover Slovenia’s most iconic sights on a semi-private day trip from Zagreb. Travel in comfort as you explore the charming capital, Ljubljana, with its unique architecture and vibrant local lifestyle. Continue your jo
What you get
About this experience
Discover Slovenia’s most iconic sights on a semi-private day trip from Zagreb. Travel in comfort as you explore the charming capital, Ljubljana, with its unique architecture and vibrant local lifestyle. Continue your journey into the underground wonder of Postojna Cave, the world’s most visited karst cave, where incredible rock formations create a magical atmosphere. Just a short drive away, step into a fairytale at Predjama Castle—the world’s largest cave castle and a Guinness World Record holder. Perched dramatically in a cliffside, it’s one of the most fascinating and unique castles you’ll ever see.
What's included
Included
- All taxes and VAT
- Official English speaking tour guide (other languages on request)
- Road tolls and parking
- Pickup and drop-off from Central Hotels in Zagreb
- Transport with a comfortable sedan car or passenger van
Not included
- Entrance fees: Postojna Cave & Predjama Castle (41,90€)
- Lunch and personal expenses
- Gratuities
- Entrance fees
- Entrance fees
What you'll see and do
Zagreb
Beginning with your hotel pickup in Zagreb at 8am, you will depart the city and ride on a 1.5 hour long drive to Ljubljana, the capital of Slovenia.
Pass by without stopping
Sava River
Once we cross river Sava, we are officially exiting Zagreb and starting our adventure.
Pass by without stopping
While enjoying your relaxing drive and just before crossing the Croatian border, you will see a medieval castle on top of a hill, Castle Mokrice. The castle has a rich history, mentioned already in the 15th century, it was the home of many noble families throughout the centuries, one of them being the famous Auerspergs. It was also used in a music video by the Pet Shop Boys.
Pass by without stopping
Krsko
On the drive we will also pass a city of Krško which is a very important source of energy for both Croatia and Slovenia. Beacouse there is a nuclear power plant Krško. It was a joint venture by both governments during the time of Yugoslavia and it provides more than a quarter of Slovenian's and 15% of Croatian's power supply.
Pass by without stopping
Novo Mesto
While on the drive we will pass many quaint villages and towns. One that stands out the most is a lovely town called Novo Mesto. A river town with a rich archaeological heritage.
Pass by without stopping
Dragon Bridge (Zmajski Most)
We will begin a walking tour through the city and explore its many wonderful locations while learning about the rich and complex history. Where once stood a Roman city called Emona today it is Ljubljana, the capital of Slovenia and also its largest city. You will learn about Napoleon's connection to the city, the evolution of Ljubljana through time and many other interesting facts. . It is a beautiful and multicultural place. While on your guided walk tour you will stand in front of the imposing road bridge called the Dragon bridge. The legend says that Jason the founder of Ljubljana joined with his Argonauts and slayed a dragon and that is how the bridge got its name. You will also learn how the bridge evolved through history and how it changed.
15 minutes here
Cathedral of St. Nicholas
Our next stop is the wonderful Ljubljana Cathedral, officially named Saint Nicholas Church. This magnificent structure was built at the start of the 18th century and it was rebuilt several times. What originally started as a Gothic church later evolved into a Baroque building. While walking around the cathedral you will see and learn about the mythic Slovenian doors that tell the entire history of the people of Slovenia. Entrance to the Cathedral is permitted but the entrance fee is 2 euro.
15 minutes here · Admission not included
Triple Bridge (Tromostovje)
Jože Plečnik is the most famous Slovenian architect and he is responsible for how Ljubljana looks today and the city's entire identity. Most of his work on the city happened between the two World wars and his urban designs changed how Ljubljana developed through time. You will learn about his inspirations when creating countless squares, parks and streets in the city and also bridges. We will visit the famous Triple bridge, a formation of three public bridges that Jože Plečnik designed.
15 minutes here
To finish our walking tour through Ljubljana we will visit the central square called Prešeren Square. It is located in the old town area and it's the true heart of the city. All major events in Ljubljana happen around Prešeren square, from festivals, political events and concerts. You will learn about how the square got its name in connection to a famous Slovenian poet France Prešeren and his tragic love affair with a mysterious woman called Julia.
15 minutes here
Ljubljana
Free time to enjoy Ljubljana and explore various restaurants and cafe's.
90 minutes here
Logatec
On our drive we will pass by this quaint town which was once eight seperate villages.
Pass by without stopping
Postojna
A town that offers varoius museums, galleries and festivals including medival tournaments.
Pass by without stopping
Predjama Castle
You will get the chance to visit an amazing Renaissance castle that lies in the mouth of a cave. Predjama castle has a rich history but it became truly known when a famous knight, Erasmus of Lueg, used it as his home. The castle is also prominent in pop culture, it was used in a Jackie Chan movie "Armour of God" and also as a location for the hit Netflix show The Witcher. You will be provided with audio guide that will take you through the castle.
60 minutes here · Admission not included
Postojna Cave
To finish the tour we will go on a guided tour through the Postojna Cave Park, the second longest cave system in Slovenia. The cave and its countless stalagmites, stalactites, formations, was first discovered in the 17th century. Archduke Ferdinand visited the caves in 1819 and became its first official tourist. From then the cave was transformed into a tourist destination. Still during war times it was also used as an ammunition storage. You will learn this and much more while exploring the cave system.
90 minutes here · Admission not included
Where it starts and ends
Meeting point
Zagreb
Address: Nikola Šubić Zrinski Square in front of the meteorological pole Directions: Departure point is located 3 minutes walk from the ban Jelačić Square
Hotel pickup
Pickup is available for selected locations. Pickup begins about 15 minutes before departure.
Ends at
Address: Nikola Šubić Zrinski Square in front of the meteorological pole Directions: Departure point is located 3 minutes walk from the ban Jelačić Square
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
- Tue, Thu, Sat
- Group size
- Up to 15 travelers per booking
- Operated by
- Roundabout Travel
Know before you go
- Public transportation options are available nearby
- Specialized infant seats are available
- Suitable for all physical fitness levels
- Please wear comfortable walking shoes
- Passport required. You are required to have your documents with you.
- This tour will still operate in all weather conditions.
Photos





What travelers are saying
Outty’s summary of the themes that recur across 40 traveler reviews. Written by us, not quoted from reviewers.
The guide
8 mentionsTravelers single out the guide as the reason the experience works.
Knowledge and storytelling
4 mentionsReviewers describe the commentary as informative rather than scripted.
Organization
3 mentionsPickup, timing, and logistics are described as running smoothly.
Value for money
2 mentionsTravelers feel they got more than they paid for.
Traveler reviews
40 verified traveler reviews for Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb. Ratings and reviews provided by Viator and Tripadvisor.
Would do it again!
Mario was such a pleasure to travel with. Quick and to the point and showed us the best spots to eat, rest, and visit! 10/10
Response from the operator: Dear client, Thank you for the feedback. We are glad that you enjoyed your tour experience with our guide Mario. We wish you the best in your future travels.
via Viator
Brilliant tour, fantastic guide
This was a great trip, we loved it all. Our guide, Stephen, has a brain like wiki – he kept us occupied with such interesting information on history, current conditions and entertaining facts. Ljubljana is beautiful – his stops at the liqueur (blueberry – fab) and chocolate shops were brilliant. Great stories about the sites as he walked us round. The castle was worth the visit but it needs more time – an hour wasn’t enough. The caves were fantastic but it’s quite a walk, so be prepared with shoes etc. (If you're touring Croatia, then Ljubljana is actually much nearer to Rijeka)
via Tripadvisor
Fun trip
I enjoyed myself very much, even though the whole trip was a bit rushed. It seems more time was spent getting to the sights than actual sight seeing.
via Viator
fall in love with LJUBLJANA SLOVENIA
It was so much fun and what a value for money We had the best tour guide he was fun and enthusiastic about what he was showing us and know about everything. My husband and I have never been on a guided tour before we always go by ourselves but after this we will be doing more. Thank you again. Everything was fantastic and what a beautiful country Slovenia is .we will differently recommend this to our friends and family. VIATOR app was very easy to use.
via Viator
Nice trip but sloppy coordination
Weather was not perfect due to rain in Ljubljana but our guide did a good job to follow itinerary. Low point of the day was when we arrived to buy tickets for Predjama Castle and Postojna Cave, and we were told the castle was full. We understand that tickets were not included but you would have expected the tour company to have them reserved; or recommended travelers to buy in advance. Sloppy preparation… Also, if there is rain expected in the morning, would have been better to change order of the schedule considering outdoors experience in Ljubljana. At the the end we couldn’t visit the castle, 1 out of 3 main attractions.
via Tripadvisor
Good to know
- Duration
- 11 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Tue, Thu, Sat
- Price range
- $60 to $118
- Hotel pickup
- Available for selected locations
- Booked in 30 days
- 14
- Verdict
- Solid Choice
Why this scores 69
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Zagreb.
How much does Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb cost?
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Prices start at $60 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Zagreb usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb take?
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Plan for about 11 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 Zagreb is not rushed.
Is Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb worth it?
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It holds an Outty Ranking of 69 out of 100, which we label "Solid Choice". That score blends traveler sentiment (4.5/5 across 40 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Zagreb, and how flexible the cancellation terms are.
Can I cancel or reschedule Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb?
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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 Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 11-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb?
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Around 14 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 Zagreb 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 Zagreb and add a light layer if any part of the 11-hour experience runs outdoors or after sunset.
Where does Ljubljana, Postojna Cave and Predjama Castle Day Tour from Zagreb 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 Zagreb 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 Zagreb?
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On Outty we rank every Zagreb experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Communism & Croatian Homeland War Tour, Zagreb Highlights: Old Town, WWII tunnels, Funicular & Tastings, Old Zagreb Private 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 Zagreb?
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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 Zagreb?
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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.
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