Start your personalized tour with hotel pickup in Zagreb and make the 2-hour drive to Postojna Cave in the comfort of your private vehicle. This natural attraction is an oft-visited site due to the unique complexity of its inner passageways filled with limestone formations. Ride the sightseeing railway that runs through the caverns and learn about the interwoven galleries, halls, and corridors from your guide.
Once you emerge into daylight, you'll head to the nearby village of Predjama, located just 5 miles (9 km) away. After a lunch stop (own expense), visit the imposing Predjama Castle, constructed inside another cave tucked into a 403-foot-tall (123-meter) vertical cliff. The magnificent fortress is noted in the Guinness Book of World Records as the largest cave castle on earth. Hear about the 700-year-old history of the castle and its previous owner while visiting the museum inside.
Your private tour concludes with the return drive to Croatia and hotel drop-off in Zagreb.