Slovenia, the green jewel of Europe, has never ceased to impress tourists with its fine sandy beaches, magnificent castles and charming towns. It continues to surprise us. Quietly, beneath the earth's surface, lies part of its beauty. We're talking about Postojna and its famous caves. The majestic stalagmite called Brilliant, a wonderful journey in a small underground train, the discovery of the baby dragon and Predjama Castle… This unmissable destination in Slovenia has surely awakened your adventurous spirit and stirred your inner explorer. Perfect for family vacations, Postojna also offers entertaining moments at its ski resort. How could anyone remain indifferent to such adventures?

Postojna and its caves

Situated in the south-west of Slovenia, Postojna is ideally nestled at the junction of roads leading to Croatia, Italy, Hungary and Austria. It spans an area of 270 km² and had 15,757 inhabitants (as of 2012).

This destination is primarily known for its caves, one of the country's greatest tourist attractions. Just 46 km from the capital Ljubljana, these caves contain wonders that would be a shame to miss during your trip to Slovenia. For over 200 years, they have welcomed more than 39 million visitors from around the world. Celebrities have left comments in the cave's Golden Book during their visits. Take part in the adventure and also make your mark on the history of Postojna Caves.

Pivka Cave and Black Cave are connected to Postojna Cave and to the underground Pivka River. Don't forget to visit Predjama Castle and Kalič Ski Resort as well. You certainly won't be bored in Postojna.

Historical notes

During Antiquity, the city's history revolved mainly around the Postojna Pass, which was part of the Amber Route. This pass is located near the city of Postojna and reaches an altitude of 606 m. It connects the Slovenian coast on the Adriatic, the Istrian Peninsula and the port of Trieste to the south-west. It also creates a link between the Inner Carniola region and the capital Ljubljana to the north-east. It was precisely through this pass that the Huns, Lombards and Goths passed during the era of major invasions.

In the Middle Ages, the city of Postojna was occupied by Slavic tribes in the 6th and 7th centuries, before belonging to the March of Carniola. It was subsequently governed by various entities.

The city's reputation as a tourist destination began in April 1818, when Luka Čeč, a lighthouse keeper, discovered the most beautiful part of Postojna Cave. In 2018, it fittingly celebrated 200 years of satisfying tourists' curiosity. It remains ready to serve you and make your Slovenia vacation unforgettable.

What to see and do in Postojna?

Postojna Cave Park

You are invited to visit Postojna Cave Park. You will discover Postojna Cave, Predjama Castle, the Vivarium, the Karst Cave Expo, and the secret rooms of Hotel Jama.

Postojna Cave

Postojna Cave is where the magic of the underground world unfolds across a network of galleries stretching 24 km long. It is known as Europe's largest show cave.

The cave hosted the first and only double-track underground railway in the world. Enjoy this unique experience with a ride on this small train through 3.7 km of track. Such an experience is best enjoyed with family or friends.

Above all, you must not miss Brilliant, the majestic stalagmite measuring 5 m high and brilliant white in color. It represents the very symbol of the cave and Slovenian karst.

Postojna Cave is accessible to all, including small children and people with reduced mobility. It remains open 7 days a week, even on public holidays. The small train journey is included in the guided tour, which lasts approximately 1.5 hours. It is a bit cool in the cave, with a temperature of 10°C, year-round. It is therefore advisable to wear warm clothing and sports shoes.

Predjama Castle

Nestled 9 km from the city, Predjama Castle was built in the 13th century, hollowed into a cliff face 123 m high, within an enormous cavity. You stand before "the world's largest castle built inside a cave". These walls hold the history of the rebellious knight Erasmus of Predjama. Listed in the Guinness Book of Records, Predjama Castle is also ranked among the ten most fascinating castles in the world.

Vivarium

More than 150 animal species are displayed in the Postojna Cave Vivarium. It's here you'll meet the adorable baby dragons, all pink. The Vivarium is located 50 m from the entrance to Postojna Cave.

Karst Cave Expo

Learn more about the underground world and karst phenomena. The Karst Cave Expo will provide explanations about the origin and formation of Postojna Cave through an interactive exhibition. Also discover other free exhibitions including Life Through Billions of Years and Butterflies of the World.

The secret rooms of Hotel Jama

Discover the hidden side of Hotel Jama, which was built in 1971. During its renovation in 2016, the hotel's secret rooms were discovered. In fact, since 1991, Hotel Jama had a double life. Operating as a hotel on the surface, the building secretly housed a special communications center of former Yugoslavia. Its secret rooms indicated the presence of secret services from the old political system.

Pivka Cave

The cave is distinguished by the Pivka River running through it. From Postojna Cave, you descend 317 steps to reach Pivka Cave, located 65 m below the surface. Of the 5 km that Pivka Cave extends, only 2 km are equipped for visits. The area is equipped with electric lighting. Following the path along the Pivka River, you can reach the Black Cave and then the exit.

Black Cave

It is named for its large black concretions. Black Cave owes its appeal to its beautiful calcite sculptures, large halls and horizontal galleries. This cave is recommended for those who enjoy challenges and demanding routes. The 3.3 km trail is scattered with water obstacles. Thanks to speleologists, the Black Cave is now connected to Postojna Cave.

Otok Cave

Connected to certain sections of Postojna Cave, Otok Cave has a tourist section 600 m long. You will find many cave formations here. Dry and horizontal, this cave has no electric lighting. You will therefore need to bring a flashlight. Rest assured the trail is well-marked. Located 1.5 km from Postojna Cave, on the road leading to the village of Predjama, Otok Cave is only open for visits between May to October, Tuesdays and Saturdays. Prior arrangements and at least 3 participants are required for a visit.

Kalič Ski Resort

Kalič is located 6 km from Postojna. The resort spreads its gentle ski slopes of 7 km across the wooded slopes of the north side of Mount Javornik. It also offers its clients 25 hectares of piste and 4 ski lifts. Why not make a stop on this side of town for a change from caves and castles? Its limestone landscape creates a pleasant and serene setting. Add some skiing sessions to that and your escape is guaranteed.

Climate

Postojna is a fairly rainy city, with monthly precipitation ranging from 80 to 155 mm (6 to 10 rainy days per month). During the warm season, between May and September, temperatures range from 15 to 24°C. The winter period is ideal for visiting the ski resort. Temperatures can drop to -6°C. The temperature in the caves remains around 10°C throughout the year.

Car

Postojna is 46 km from Ljubljana, a drive of less than an hour. From Venice and Zagreb, you need about two hours of driving. The cities of Salzburg, Vienna, Budapest, Dubrovnik or Belgrade are also connected to the city. In just a few hours of driving, you'll be in Postojna.

Train

The railway is also an option. If you travel on the Vienna-Venice train, it passes through Postojna station. The latter is also connected to Zagreb, Salzburg, Rijeka and Koper by rail.

Coaches

In Ljubljana, you can take one of the long-distance buses, which depart every hour. You will arrive at the bus station in downtown Postojna.