These tours bundle Slovenia’s two most theatrical underground sights, and I’ve picked the ones that do both justice. An electric train carries you deep into Postojna Cave; nearby, Predjama Castle sits wedged into a cliff mouth, the largest cave castle in the world. Bring a layer, since the cave holds about 10 degrees Celsius year round.
Uncover the captivating wonders of Postojna Cave and Predjama Castle on this intriguing tour in Ljubljana - a journey that promises hidden gems and unforgettable experiences.
Most Popular★ 4.9“great driver, he told us a lot about land and the people. the castle and especially the cave was incredible.”
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2,146 reviews6 hoursFrom $115by To do in Slovenia
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Discover Slovenia’s top natural and historical marvels with this guided tour of Postojna Cave and Predjama Castle, including skip-the-line tickets from Ljubljana.
★ 5.0“Fantastic trip, Vladimir, out driver and guide was right on time in collecting us from our hotel. Lots of entertaining information on route to the caves, which were spectacular and well worth a visit. Then on to Predjama Castle, which was beautiful and we really…”
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938 reviews6 hours (approx.)From $131.81by To do in Slovenia
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Curious about Slovenia's hidden gems? Join us on a journey through Lake Bled, Postojna Cave, and Predjama Castle for a day of enchantment and mystery.
★ 5.0“This was an amazing day, and the most wonderful way to see the best of Slovenia in one day at a great pace. The three parts of this tour were all superb, picturesque, experiences by themselves. To have all three in one day with a…”
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879 reviews10 hours (approx.)From $151.16by Slovenia Explorer
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Kicking off from Ljubljana, embark on a journey to Lake Bled and Postojna Cave that promises unparalleled experiences - but what lies hidden within these Slovenian treasures?
★ 4.8“The trip was awesome! Our tour guide Thomas was the best. His knowledge gives you lots of insight into the beautiful, clean, efficient and scenic Lake Bled, Postojna Caves and Predjama Castle and Slovenia and Ljubljana as a whole. The entire day trip was a…”
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694 reviews11.5 hoursFrom $173by To do in Slovenia
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Dive into Slovenia's captivating natural wonders and historic gems on this intimate day tour from Ljubljana, where adventure and culture intertwine in a spellbinding odyssey.
★ 4.8“The guide was great and funny as well, told about Slovenia's history, places about to visit during the day. Ride was smooth and weather perfect.”
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250 reviews10 hoursFrom $117by Slovenia Explorer
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Explore Slovenia’s underground marvels with this guided tour from Ljubljana, visiting Postojna Cave and Predjama Castle—perfect for history buffs and adventure seekers alike.
★ 4.9“There was nothing about this tour that I didn't like. The guide (David) was great, the transport was modern, clean and comfortable, and the itinerary was delivered on schedule.”
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247 reviews5.5 hoursFrom $81by Slovenian Wander
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Discover Slovenia's highlights with this full-day tour from Ljubljana, visiting Postojna Cave, Predjama Castle, and charming Piran—perfect for culture and nature lovers.
★ 5.0“Started out in dodgy weather which got worse, until we got to Piran when the sun came out at just the right moment. Great guide who offered us a bit of the traditional blueberry and honey tipple at the end. Lovely company on the trip…”
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244 reviews10 hoursFrom $128by Slovenian Wander
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Trek through Slovenia's enchanting landscapes to unravel the secrets of Postojna Cave, Predjama Castle, and Lake Bled, where surprises await at every turn.
★ 4.7“This was great value for money. It was a beautiful trip and our guide Tibor was fantastic. Very knowledgeable , fun and engaging ! Thank you”
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220 reviews11.5 hoursFrom $169by To do in Slovenia
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Adventure into the depths of Postojna Cave and unravel the enigmatic stories of Predjama Castle, where mysteries and treasures await - but what lies beyond?
★ 4.8“My driver guide Ines was great. Just in time and gave me excellent service. The cave is amazing.”
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185 reviews5 hoursFrom $76by Govisitslovenia
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Trek through time and terrain on an enthralling small group tour to Postojna Cave and Predjama Castle in Ljubljana, where history and mystery converge.
★ 5.0“This was a great tour. Our guide Jure was fantastic. Very knowledgeable about Slovenia and the sites we visited. Had a great day.”
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161 reviews5 hours 30 minutes (approx.)From $88.32by Gray Line Slovenia Explorer
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Bask in the enchanting beauty of Postojna Cave and Predjama Castle, where ancient secrets beckon you to unravel their mysteries...
★ 4.7“Well organised trip. Our guide was very informative, he had a lot of enthusiasm and passion about his work. Highly recommend”
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137 reviews5.5 hoursFrom $124by ROUNDABOUT d.o.o. (Slovenia)
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Discover the captivating essence of Slovenia's natural beauty and historical charm on a day trip to Bled Lake with Postojna Cave & Castle - Small Group tour from Ljubljana, where surprises await at every turn.
★ 4.5“This is for the productive and quick on your feet traveler who wants to do both Bled and Postojna caves and castles. Our tour guide Tai as her nickname goes she was able to cater to a predominantly Spanish speak group of 7 and I…”
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127 reviews10 hours 30 minutes (approx.)From $193.50by Roundabout Travel
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Mesmerizing natural wonders and architectural marvels await in this captivating tour that takes you from Ljubljana to the heart of Slovenia's captivating landscapes.
★ 5.0“Fantastic tour. Definitely recommend it to everyone visiting slovenia. The guide Nate was very friendly and the small group made it very enjoyable.”
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110 reviewsFrom $124
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Wander through the enchanting Postojna Cave and Castle, where ancient mysteries and natural wonders converge, leaving you captivated and eager for more.
★ 4.5“We are both seniors. The initial walk in the cave after departing the train is quite strenuous for seniors, up a very steep grade. We believe Viator should mention this in its online description. The provided guide only stopped 3 times during the 1-1/2 hour…”
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101 reviews5 hours 30 minutes (approx.)From $128.19by Roundabout Travel
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Mesmerizing caves and captivating castles await on this tour that takes you beyond Ljubljana's charming streets into Slovenia's natural and historical wonders.
★ 4.9“Our tour guide, David, was so kind, friendly and knowledgeable. He was great from start to finish. We learnt more about where we were going and where we had been and he guided us all the way. The castle and caves were astonishing. David also…”
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94 reviewsFrom $70
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