Ljubljana: Postojna Cave, Predjama Castle & Piran Day Trip

Three Slovenian landmarks in one day: cave, cliff castle, and Adriatic coast

You ride a train through Postojna Cave's underground chambers, explore a castle built into a cliff at Predjama, then walk through the Adriatic coastal town of Piran: all in one day with entry fees, transport, and a guide handling the logistics. Hotel pickup in Ljubljana and return in the evening.

Step-by-step itinerary

Stops and time spent at each

1. Predjama Castle1h · entry included
2. Postojna Cave1h 30m · entry included

Explore Postojna Cave, Predjama Castle, Piran

• Visit Postojna Cave
• Take train ride inside cave
• Explore Predjama Castle
• Discover castle passageways and legends
• Stroll through Piran town
• Enjoy Venetian architecture and seaside

The experience

The train whistle echoes through the cavern before you've even stepped inside Postojna Cave. That sound (sharp and small against the weight of stone around you) is the first thing that tells you this isn't a typical cave tour. You're about to ride a narrow-gauge train into an underground world, stalactites hanging like frozen waterfalls overhead, the tracks disappearing into darkness. The cave entrance fee is included, so you walk straight through without the usual ticket-counter shuffle. The train ride itself takes you deep into passages most visitors never see on foot, and the whole experience inside lasts around an hour.

After the cave, the day shifts to something different: Predjama Castle, built directly into a 123-meter cliff face. It's the kind of place that makes you stop walking and just stare for a moment. Medieval passageways wind through the rock, hidden rooms open up where you'd expect solid stone, and the views from the terraces look out over green valleys. You'll have time to move through the castle at your own pace, reading the plaques about the legends. There's a lot of history compressed into those rooms. Entry is included, and the castle sits about 30 kilometers from Ljubljana, so the drive itself is part of the rhythm of the day.

By afternoon, you're in Piran, a coastal town on the Adriatic with Venetian architecture and narrow cobblestone streets that slope toward the water. It's a walking tour, so you're on foot through the old town, past the Church of St. George and down to the seafront where you can actually stop and breathe for a bit. The Mediterranean light hits differently here than it does inland, sharper, saltier somehow. You get time to wander, grab lunch if you want (not included, but the restaurants are straightforward), and just sit by the water before heading back to Ljubljana. The whole day runs about ten hours from pickup to drop-off, and the air-conditioned vehicle means you're not sweating through the drives between stops.

What’s included

• Postojna Cave entrance fee.
• Predjama Castle entrance fee.
• air-conditioned vehicle transport from Ljubljana.
• Piran walking tour.
• hotel pickup and return to Ljubljana.

Before you book

Days and timesEvery dayDeparts at 08:00

Book up toStart time

AgesAdult (13 and older) · Child (3 to 12 years) · Infant (under 3)

Live guideEnglish

Meeting point and pickupHotel pickup included.You can choose from 4 pickup points.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Prices and times updated today

Good to know

Low physical effortInfant seats availablePublic transport nearbyNot recommended during pregnancyNot recommended with heart problemsNot recommended with back problems

Operated by To do in Slovenia

Is this one for you?Book this if you want to see three major Slovenian attractions in a single day without renting a car or buying separate tickets: the fixed itinerary and included transport mean you show up and the day unfolds on schedule.

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Top questions

Can children come?

Yes. Ticket types: Child (3 to 12 years); Infant (under 3).

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

How long is the train ride inside Postojna Cave?

The underground train journey lasts around one hour, taking you through the main passages and chambers of the cave.

Is lunch included in this day trip?

No, lunch is not included. You'll have free time in Piran to eat at local restaurants at your own cost.

What's the distance from Ljubljana to Postojna Cave?

Postojna Cave is approximately 50 kilometers from Ljubljana, about a 45-minute drive.

Can I visit these three places on my own, or do I need a guide?

The tour includes transport and entry fees, so you don't have to arrange tickets or driving yourself. A guide leads the group through the main stops.

How much walking is involved in Piran?

Piran is explored on foot through cobblestone streets and the old town center. It's moderate walking on uneven surfaces, with time to rest by the seafront.

What time does the tour start and end?

The tour runs approximately 10 hours total, including hotel pickup in Ljubljana and return in the evening. Exact times depend on your hotel location.

Is there a bathroom break during the day?

Yes, facilities are available at Postojna Cave, Predjama Castle, and in Piran.