Karst Wonders

Morning Postojna Cave & Predjama Castle

Cave Train & Clifftop Castle

Book now
book now

A morning of underground magic and medieval legends.

Depart from Ljubljana for a seamless morning adventure. Descend into Postojna Cave via its unique underground train to see stunning stalactites, and then stand in awe before Predjama Castle, an architectural marvel built directly into a high cliff. This tour is perfect for those who want to see Slovenia's most famous landmarks and still be back in the city for the afternoon.

Price

€90

Price per person. Scroll down to see what’s included in your tour—transparent pricing, no surprises.

duration

6 hours

Just enough to discover your new favorite Slovenian wine.

Intimate groups

up to 12 guests

Small groups for a personal experience.

language

English

Led by passionate local guides. Spanish or German available on request for private tours.

peace of mind

Free cancelation

Up to 24 hours before the tour departs.

Book now

What you'll experience

The most efficient morning trip from Ljubljana.

POSTOJNA CAVE

The Crown of the Underworld

Descend into a world sculpted by water and time. As you board the historic electric train, you’ll enter a 24-kilometer labyrinth of majestic halls and intricate formations. Postojna is not just a cave; it is a subterranean cathedral. An audio guide will lead you through the Brilliant Passage and into the vast Concert Hall, explaining the unique biodiversity that includes the rare, pale "human fish." The constant temperature and the sheer scale of the stalactites create an otherworldly atmosphere that has enchanted visitors for over two centuries.

Predjama Castle

The World’s Largest Cave Fortress

Just a short drive from the caves lies a sight that defies gravity and logic. Built directly into the mouth of a towering 123-meter cliff, Predjama Castle is a Guinness World Record holder and a testament to medieval ingenuity. Explore the dramatic fusion of man-made stone walls and natural rock chambers. As you wander through the knight’s quarters and the secret tunnels once used by the rebellious Erasmus of Predjama, you will feel the history of a fortress that remained unconquered for centuries. It is the perfect, dramatic finale to your Slovenian adventure.

Meeting points

Ljubljana City Center

We’ll pick up guests from Vodnikov trg, Trg francoske revolucije, and the InterContinental Hotel at Bavarski Dvor to start your unforgettable day.

Ride to Postojna

Sit back and relax

Enjoy a comfortable drive through Slovenia’s scenic countryside as we head to the famous Postojna Cave.

Postojna Cave

Explore the underground wonder

Discover the magical stalactites and stalagmites of Postojna Cave on an audio guided tour through one of the world’s largest show caves. Ride the legendary cave train into 24km of karst galleries and halls. See the "Brilliant" stalagmite and the mysterious "human fish" (Proteus). Reminder: The temperature in the cave is 10 °C. If you’re a summer visitor, don’t forget to bring warm clothing.

Predjama Castle

A Knight`s Stronghold

A short drive brings us to the Guinness World Record holder: the world's largest cave castle. Visit the dramatic Predjama Castle, built into a cliff and steeped in medieval legends. Hear the legend of the rebellious Erasmus of Predjama, the medieval hero of the castle! Perfect for photos and history lovers alike.

Ride back to Ljubljana

Comfortable ride back

Relax on the drive back to Ljubljana, letting your mind wander through the wonder of Postojna Cave’s sparkling stalactites and stalagmites and the daring tales of Erazem. A perfect ending to a day full of Slovenia’s highlights.

What you’ll experience

Every stop on this tour has been carefully chosen - not just for its taste, but because these are the places we visit with our friends, the ones we know, trust and love.

Included in price

Professional Private Guide

Expert English-speaking local storyteller dedicated to your group.

Stress-Free Logistics

We handle navigation, parking, and timing—so you can simply relax.

Mineral Water & Refreshments

Chilled bottled water and light snacks available throughout the day.

Insider Access

Learn interesting stories, history, and little-known facts about each site you visit.

Wi-Fi on Board

High-speed internet to share memories in real-time.

Admission Fees

Tickets for Postojna Cave, Predjama Castle

Optional extras

Meals

Lunch and personal expenses.

Optional Souvenirs

Any personal purchases.

You Might Wonder ...

What is the temperature in the cave?

Open

It is a constant 10°C (50°F) year-round. We recommend bringing a light jacket even in summer.

What if I want to stay for the afternoon Bled tour?

Open

Great choice! We return to Ljubljana exactly at the meeting time for the afternoon tour, making it a perfect full-day combination—subject to availability.

How many people will be in the van?

Open

Our tours are operated in small groups with a maximum of 7 guests per van to ensure comfort and a personal experience. No one is seated in the middle front seat. If you are a group of 8 or more, please contact us directly and we will gladly arrange a private tour tailored to your needs.

What if it rains?

Open

Our tours operate in all weather conditions. In fact, Postojna Cave is an excellent choice for a rainy day, as the experience takes place underground. Lake Bled is magical in every season and weather condition. Your guide will always adapt the program and show you the most beautiful spots — even on a rainy day.

Can we join the tour with a stroller?

Open

Yes. Some areas may be difficult to access with a stroller, but it can be safely left in a secure spot when needed, and your guide will assist you.

Do you provide child seats?

Open

Yes, we do. Please contact us in advance if you require a baby or child seat so we can prepare everything for your family’s comfort and safety.

Prefer a private adventure?

Want a fully personalized experience? The best way to plan your private tour is to call, text, or schedule a quick video chat with me. Share your travel preferences, activity level, and comfort with crowds, and we’ll craft an itinerary that’s perfectly tailored to your group.

Janez Skubic, founder and director of Sigismundi Luxury Adventures

Janez Skubic

Founder

Passion for travel was ignited during my studies in tourism. From there, I honed my skills at a luxury boutique hotel, learning the art of hospitality. But it was my time as a globetrotting tour guide that truly shaped me. With a love for history and nature, I led travelers on unforgettable adventures worldwide. Now, I combine my expertise to curate unique journeys blending culture, adventure, and discovery.

Get in touch

Ask us anything or book your free consultation now.

hello@sigismundi.si
+386 40 238 777
Whatsapp
Viber
Instagram