Koper to Postojna Cave

With echoing chambers, galleries, and stalactite-lined halls, Postojna Cave is one of Slovenia’s most popular—and beautiful—attractions. Check it off in just half a day on this convenient shared tour with 2-way transfers from Koper cruise port, homes, and hotels. Ride a train through the cave, learn about the bizarre “human fish”, and grab a photo in front of Predjama Castle, built into a cavern mouth.

Let someone else take care of planning and driving on this day trip to Predjama Castle and Postojna Cave, two of Slovenia’s most popular attractions. After pickup from Koper, Trieste, or Piran, head to Postojna Cave, and ride electric trains through underground tunnels, galleries, and hallways. Afterward, visit the Predjama Castle, one of Europe's only preserved cave castles. Tours are available in English, German, Italian, and Czech.

The temperature in the cave is around 10°C/50ºF. Walking comfortable shoes and warm jackets are recommended, After a few kilometres ride from Postojna Cave you will experience the fairytale world of knights in an medieval marvel, more than 800 years old, the largest cave castle in the world, listed as one of the Guinness World Records. This is our usual proposal. If you want a signature tailor-made trip, we will prepare it just for you. Feel your unique travel experience designed by local pleasure experts. Please feel free to approach us with any special ideas and interests that you desire and we’re sure we can handle it to your satisfaction. Duration: Approx. 5 hours The tour is accompanied by local english speaking tour guides

Postojna Cave and Predjama Castle are two of Slovenia’s most dramatic sites, with included hotel and port pickup for seamless transport. Explore the vast natural cave and the dramatic castle on a tour tailored to your cruise schedule, making the most of your time in port; you’ll be on your way to the scenic karst landscape an hour after the ship docks.

Slovenia is a compact country so you can see a great deal in one day. Skip the self-drive stress with this private full-day tour from Istria, near the Italian border. Whether your tastes run to wine tastings, Lipizzaner horses, or Instagram favorites such as Lake Bled, your private driver will deliver: pay as you go for food and tickets.

Get off the boat and spend a day in the Slovenia with this private full-day shore excursion to Postojna Cave and Ljubljana from Koper. An experienced local guide will meet you at port and take you one of the country’s best natural wonders, like karst caves, full of cavernous rooms and halls. After spending time exploring the cave system your tour will continue on to the marvelous city of Ljubljana, Slovenia’s capital and a city ripe for exploring. Make stops at the Franciscan Cathedral, the fountain of Francesco Robba and Town Hall, among other places. You’ll have time to explore the city and do some shopping before driving back to port.

Explore one of the most intriguing cave systems in the world with a Postojna Cave tour from Koper. You’ll be transported into the heart of the cave by train making this tour accessible for all ages and types of travelers. Once inside, you’ll enjoy a guided walking tour though the stunning passageways and chambers flanked by spectacularly carved stalactite and stalagmite formations. On the way back to Koper, you’ll visit the Renaissance fortress of Predjama Castle carved dramatically into the mouth of a cave.

Predjama Castle and Postojna Cave sit within a few miles of each other in the Slovenian countryside, yet most visitors only make it to one. This small-group tour from Ljubljana covers both—starting with the 13th-century castle built into a cliffside cave, then descending underground at Postojna for a narrow-gauge train ride through the cave's vast chambers.

A Slovenian Karst classic awaits! Explore two of Slovenia's most stunning treasures: Postojna Cave, Europe’s most visited cave, and Predjama Castle, the world’s largest cave castle. Begin with Postojna Cave, a 24 km (15-mile) underground marvel featuring breathtaking stalactites, stalagmites, and a magical electric train ride through its winding passages. Spot the rare "human fish," a symbol of the cave's unique biodiversity. Just nearby, Predjama Castle rises dramatically from a sheer cliff face. This 13th-century fortress blends nature and history, with grand halls, secret tunnels, and legendary tales of knight Erasmus. Enjoy spectacular views and capture unforgettable moments of the surrounding landscape. Together, these iconic landmarks offer an adventure combining nature's wonders with Slovenia’s rich heritage. Flexible tours cater to your needs, promising an experience as memorable as the journey itself!

This group excursion is ideal for travelers with limited time in Slovenia. You won’t have to worry about the trip being overcrowded. Take the stress out of planning transport by having round-trip transport from the cruise ship terminal or Koper hotels provided. Explore Postojna Cave with a guide, so you won’t get lost, and then visit the picturesque Predjama Castle.