
Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste
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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.
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Quick answer
Is Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste worth booking?
Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste is a 12-hour experience in Zagreb, Croatia, from $604 per person. It scores 53 out of 100 on the Outty Ranking, which we label “Worth a Look”. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 53 / 100
- Rating
- Not yet rated
- Duration
- 12 hours
- From
- $604 per person
Postojna Cave is the only place where you can see the most precious brilliant in the form of a cave formation and also meet the baby dragons. Just like the world above the surface, Postojna Cave boasts towering mountains
What you get
About this experience
Postojna Cave is the only place where you can see the most precious brilliant in the form of a cave formation and also meet the baby dragons. Just like the world above the surface, Postojna Cave boasts towering mountains, murmuring rivers and vast subterranean halls. It is a real challenge for explorers and the cradle of speleobiology. Predjama Castle is so special and unique, it ranks among the ten most fascinating castles in the world, and so romantic that many couples choose it for their wedding vows. The world's largest cave castle, listed as one of the Guinness World Records, tells a picturesque story about the times when comfort had to give way to safety, and when the clatter of weapons would often drown out troubadours' songs.
What's included
Included
- On-board WiFi
- In-vehicle air conditioning
Not included
- Tea and coffee
- Dinner
- Lunch
- Breakfast
What you'll see and do
Postojna Cave
Postojna Cave is an inevitable destination for anyone who is in Slovenia. Numerous cave formations and diverse fauna are just some of the reasons why you should go down to the depths of Postojna. Postojna Cave is the only karst cave with a railway that works for more than 140 years. Take the underground train ride and prepare to be amazed. This cave is also home to baby dragons more precisely olms the endemic amphibian who are still the mystery to us all. No wonder it is the most visited and most fascinating cave in Europe.
120 minutes here · Admission not included
Trieste
This Italian city and the largest cargo port are located in the bay of the same name. If you start descending to the center of town, the beautiful scenes of the city and the Adriatic Sea will blend in front of your eyes. Since its position is at the intersection of different nations and cultures, Trieste can boast with its rich cultural and historical heritage. Do not overlook this charming Italian city, because it will amaze you with what it has to offer.
120 minutes here
Predjama Castle
This renaissance castle built in the cave mouth is located in south-eastern Slovenia, in Predjama village just 9 km away from the famous Postojna Cave. The castle was first mentioned in the 13th century. Since it was built under the rocky arch of the cave, it was really difficult to approach it. There is a legend of the ruler of the castle at the time, Erazem of Predjama. He was known as a robber baron and used the castle to endure a long siege. During the siege, he was killed by a shot from a cannon in his lavatory. Explore the castle's armory, chapel, kitchen, torture chamber and discover the magic of medieval life. The Predjama Castle has been used as a filming venue for numerous documentaries and feature films such as Armour of God, and Ghosthunters International. Being ranked among the top ten most fascinating castles in the world you need to check it out.
120 minutes here · Admission not included
Where it starts and ends
Hotel pickup
Pickup is included for all travelers. Pickup begins about 30 minutes before departure.
Options you can book
Car
Car Pickup included
Van
Van Pickup included
Minivan
Minivan Pickup included
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 8 travelers per booking
- Operated by
- Sit`N`Trip
Know before you go
- Wheelchair accessible
- Infants and small children can ride in a pram or stroller
- Service animals allowed
- Public transportation options are available nearby
- Specialized infant seats are available
- Transportation options are wheelchair accessible
- All areas and surfaces are wheelchair accessible
- Suitable for all physical fitness levels
Photos


Good to know
- Duration
- 12 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Price range
- $604 to $673
- Hotel pickup
- Included for all travelers
- Booked in 30 days
- 0
- Verdict
- Worth a Look
Why this scores 53
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Zagreb.
How much does Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste cost?
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Prices start at $604 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 Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste take?
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Plan for about 12 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 Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste worth it?
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It holds an Outty Ranking of 53 out of 100, which we label "Worth a Look". That score blends traveler sentiment (0/5 across 0 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 Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste?
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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 Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 12-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste?
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Around 0 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 12-hour experience runs outdoors or after sunset.
Where does Day Trip Zagreb- Postojna Cave- Predjama Castle- Trieste 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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