Postojna cave, Predjama castle and Piran tour from Ljubljana
Ljubljana, Slovenia

Postojna cave, Predjama castle and Piran tour from Ljubljana

Outty Ranking 87 5.0 · 116 traveler reviews10 hoursFrom $128
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Outty Ranking

87/100

Exceptional. Our proprietary evaluation. How we score

Traveler rating

5.0/5

Based on 116 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.

Quick answer

Is Postojna cave, Predjama castle and Piran tour from Ljubljana worth booking?

Postojna cave, Predjama castle and Piran tour from Ljubljana is a 10-hour experience in Ljubljana, Slovenia, from $128 per person. It scores 87 out of 100 on the Outty Ranking, which we label “Exceptional”, based on a 5/5 rating across 116 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.

Outty Ranking
87 / 100
Rating
5/5 (116)
Duration
10 hours
From
$128 per person

The road will initially lead us to the Postojna cave, where we will admire one of the most popular karst caves in the world. While riding on the cave train, everyone will be fascinated by the cave's might and its karst phenomena. We will then continue our trip and reach the unique and largest cave castle in the world - the Predjama Castle, which has been dominating perched high up in the cliff for 800 years. After exploring the castle and cave, our next destination is Piran, acclaimed as one of the most beautiful spots in the Mediterranean, often referred to as the jewel of the region. In this charming seaside town, we'll marvel at narrow streets and distinctive architecture. A leisurely walk around the main square, Tartini Square, will provide us with the opportunity to appreciate Piran, enclosed by ancient town walls and overlooking the sea.

What you get

    About this experience

    The road will initially lead us to the Postojna cave, where we will admire one of the most popular karst caves in the world. While riding on the cave train, everyone will be fascinated by the cave's might and its karst phenomena. We will then continue our trip and reach the unique and largest cave castle in the world - the Predjama Castle, which has been dominating perched high up in the cliff for 800 years. After exploring the castle and cave, our next destination is Piran, acclaimed as one of the most beautiful spots in the Mediterranean, often referred to as the jewel of the region. In this charming seaside town, we'll marvel at narrow streets and distinctive architecture. A leisurely walk around the main square, Tartini Square, will provide us with the opportunity to appreciate Piran, enclosed by ancient town walls and overlooking the sea.

    What's included

    Included

    • Hotel pick up and drop off
    • Professional English speaking guide
    • Transport by air-conditioned minivan

    Not included

    • Food and drink
    • Gratuities (optional)
    • Postojna Cave and Predjama Castle entrance fee
    • Postojna Cave ticket only (without Castle) - 31 €

    What you'll see and do

    1. Postojna Cave

      A journey into the 2 milion old cave with a spectacular interior. Postojna Cave is an impressive cave with global recognisability that has already reached 38 milion visitors in 200 years since it was opened to the public. A wonder happend when the Pivka river threaded its way in underground world and create firstly a cave and later a breathtaking interior with a fantastic web of tunnels, galleries, halls and passages. A picturesque karst phenomena created also an unique natural creations as stalactite, stalagmite, curtains, petrified waterfalls and cave pearls. One of the endless wonders in the cave is also so called »human fish« or »proteus« - a blind animal most notable for its adaptations to a life of complete darkness in its underground habitat.

      120 minutes here · Admission not included

    2. Predjama Castle

      A magnificent world-famous castle that cause a fantasy and mysterious feelings. Predjama castle, one of the most picturesque Renaissance castles from 16th century is build on a 123-meter high cliff and has a connection with a mysterious cave system underneath the castle. The dramtic, unconquerable, majestic and mysterious castle is also written in Guinness Book of World Records as the largest cave castle in the world. The interior of castle is today changed into a interesting museum where you can see objects that were found in the castle -chalice, three goblets, cup with a cover, cup, windmill cup, salt cellar and two candlesticks.

      90 minutes here · Admission not included

    3. Piran

      The picturesque town of the Adriatic, labeled as »the Mediterranean treasure«. Piran, an outstanding and one of the most authentic towns surrounded by the sea, is a historical and cultural monument. The town has a typical Mediterranean spirit with its narrow streets and closely constructed houses. The »dream town« owns an old town wall (with a breathtaking view from the top), the main square (with the statue of the well-known Giuseppe Tartini, who was a composer, a violinist and was born in this town), the picturesque St. George Parish church and other attractions. Let's join the locals and sit by the sea, chat and listen to sounds of the sea.

      120 minutes here

    Where it starts and ends

    Hotel pickup

    Pickup is included for all travelers. Pickup begins about 5 minutes before departure.

    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
    Slovenian Wander

    Know before you go

    • Specialized infant seats are available
    • Suitable for all physical fitness levels

    Photos

    Panoramic view from the town's wall., Postojna cave, Predjama castle and Piran tour from LjubljanaPostojna cave, Predjama castle and Piran tour from Ljubljana, photo 3Postojna cave, Predjama castle and Piran tour from Ljubljana, photo 4Postojna cave, Predjama castle and Piran tour from Ljubljana, photo 5Stunning Predjama castle., Postojna cave, Predjama castle and Piran tour from LjubljanaPiran, Postojna cave, Predjama castle and Piran tour from Ljubljana

    What travelers are saying

    Outty’s summary of the themes that recur across 116 traveler reviews. Written by us, not quoted from reviewers.

    The guide

    9 mentions

    Travelers single out the guide as the reason the experience works.

    Knowledge and storytelling

    5 mentions

    Reviewers describe the commentary as informative rather than scripted.

    Photo opportunities

    2 mentions

    The views and photo stops come up again and again.

    Value for money

    2 mentions

    Travelers feel they got more than they paid for.

    Physical effort

    2 mentions

    Expect real walking or climbing: reviewers mention the effort involved.

    Pace and timing

    2 mentions

    Several reviewers comment on how the schedule is paced.

    Traveler reviews

    116 verified traveler reviews for Postojna cave, Predjama castle and Piran tour from Ljubljana. Ratings and reviews provided by Viator and Tripadvisor.

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    Michael_T · October 2026

    Our guide DJ lead us on...

    Our guide DJ lead us on quite an adventure to the three locations. He was most professional and fun to be around. Pick up and safety issues were great and the whole day was perfect. It would take days to describe and comment on the sites visited, but rest assured they should not be missed. Thanks again DJ for your efforts. Mike Talluto

    via Viator

    Karen_W · October 2026

    Great day!

    So glad to see that Nate was our tour quide again. It is a long tour but Nate gave us great information and directions. Recommend this tour! Nate knowledge and sense of humor made the whole day a special trip!

    via Viator

    MargaretV_R · September 2026

    Excellent

    Excellent. The pre-tour communication was good and the driver-cum-tour guide was knowledgeable, personable and helpful. The sights were worth the few hours driving, particularly the spectacular caves.

    via Viator

    Emma_M · September 2026

    Amazing tour!

    We had a fantastic time on this tour. Our tour guide was very knowledgeable and gave us lots of information about each location.

    via Viator

    Song_H · September 2026

    A great gateway for next visit.

    This was one of those travel days that stays with you because each stop felt completely different. Postojna Cave was extraordinary in scale and almost otherworldly. Predjama Castle was the place I had been most curious about, and seeing it built directly into the cliff was even more impressive in person. Then ending the day in Piran, walking by the Adriatic and sitting in Tartini Square, gave the whole day a completely different rhythm. What I appreciated most was that the trip never felt like simply checking three places off a list. We had enough time to actually take them in. A special thank you to our driver and guide, Sam. He was extremely punctual, warm, knowledgeable, easygoing, and kept the whole day running seamlessly without ever making it feel rushed. That balance is not easy to get right, and it made a real difference. A very memorable way to experience the remarkable variety of Slovenia in a single day.

    via Viator

    Good to know

    Duration
    10 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
    41
    Verdict
    Exceptional

    Who runs this experience

    Operated by Slovenian Wander, who run 7 experiences we rank across 1 city, with an average Outty Ranking of 73.1.

    See everything Slovenian Wander runs

    Why this scores 87

    The Outty Ranking is a weighted composite. Here is how this experience performed on each component.

    Traveler sentiment (30% weight)98
    Review evidence (18% weight)76
    Booking momentum (14% weight)72
    Value for money (12% weight)100
    Listing quality (10% weight)85
    Local standing (8% weight)74
    Booking flexibility (8% weight)100

    Postojna cave, Predjama castle and Piran tour from Ljubljana: questions travelers ask

    Practical detail on this experience, plus the wider planning questions for Ljubljana.

    How much does Postojna cave, Predjama castle and Piran tour from Ljubljana cost?

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    Prices start at $128 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, Predjama castle and Piran tour from Ljubljana take?

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    Plan for about 10 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, Predjama castle and Piran tour from Ljubljana worth it?

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    It holds an Outty Ranking of 87 out of 100, which we label "Exceptional". That score blends traveler sentiment (5/5 across 116 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable most highly reviewed in Ljubljana, and how flexible the cancellation terms are.

    Can I cancel or reschedule Postojna cave, Predjama castle and Piran tour from Ljubljana?

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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, Predjama castle and Piran tour from Ljubljana suitable for kids and families?

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    Yes, all ages are welcome. Families should still weigh the 10-hour running time, and strollers are easier on the earlier, quieter departures.

    How far in advance should I book Postojna cave, Predjama castle and Piran tour from Ljubljana?

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    Around 41 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?

    +

    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 10-hour experience runs outdoors or after sunset.

    Where does Postojna cave, Predjama castle and Piran tour from Ljubljana 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, Postojna Cave and Predjama Castle - Entrance Tickets Included, Ljubljana Small Group Food Walking 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?

    +

    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, Predjama castle and Piran tour from Ljubljana?

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    Included: Hotel pick up and drop off; Professional English speaking guide; and Transport by air-conditioned minivan. Not included: Food and drink; Gratuities (optional); Postojna Cave and Predjama Castle entrance fee; and Postojna Cave ticket only (without Castle) - 31 €. Always check the voucher for the final list before you travel.

    Does Postojna cave, Predjama castle and Piran tour from Ljubljana include hotel pickup?

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    Yes, pickup is offered for every traveler from 15 listed pickup locations in and around Ljubljana. Be ready about 5 minutes before the start time.

    What languages is Postojna cave, Predjama castle and Piran tour from Ljubljana 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, Predjama castle and Piran tour from Ljubljana?

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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, Predjama castle and Piran tour from Ljubljana 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, Predjama castle and Piran tour from Ljubljana if the weather is bad?

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    This experience depends on good weather. If it is canceled because of poor weather, you are offered a different date or a full refund.

    What do travelers say about Postojna cave, Predjama castle and Piran tour from Ljubljana?

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    Across 116 reviews averaging 5.0 out of 5, recurring themes include the guide, knowledge and storytelling, photo opportunities. Travelers single out the guide as the reason the experience works. One thing to know: Expect real walking or climbing: reviewers mention the effort involved.

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