Postojna Cave

Postojna Cave is the queen of the underground world and the most popular tourist cave in Europe. Carved by the Pivka River over millions of years, the 24-kilometer system is a masterpiece of karst nature. The highlight of any visit is the ride on the world's only double-track underground railway, which has been transporting visitors since 1872. The 5-kilometer tourist trail leads through magnificent chambers such as the Great Mountain, the White Hall, and the Concert Hall, which can hold up to 10,000 people. The cave is also famous for its inhabitant, the Proteus anguinus or 'human fish,' a unique blind amphibian that lives in the dark waters and is locally known as a 'baby dragon.' Visitors can observe these rare creatures in a specialized vivarium. Postojna Cave has a long history of tourism, officially opening to visitors in 1819 and becoming one of the first caves in the world to be lit by electricity in 1884. The most iconic formation is the 5-meter-tall white stalagmite called 'Brilliant.' Inside the cave, the temperature remains a constant 10 degrees Celsius (50°F) all year round, so warm clothing is essential even in summer. The tour takes about 90 minutes and follows well-maintained paths. A modern visitor center at the entrance provides dining options, gift shops, and interactive exhibitions about the Karst ecosystem. It is an unforgettable experience that combines geological wonder with a fascinating history of early exploration.

Nearby cities

Novo Mesto

Novo Mesto is the economic and cultural center of the Dolenjska region.

Kamnik

Kamnik is a historic town at the foot of the Kamnik–Savinja Alps.

Jesenice

Jesenice is known as the city of steel and ice hockey.

Domžale

Domžale is located north of Ljubljana at the foothills of the Kamnik Alps.

Nova Gorica

Nova Gorica was built after WWII directly on the border with Italy as a counterpart to the city of Gorizia.

Škofja Loka

Škofja Loka is one of the best-preserved medieval towns in Slovenia.

Škofja Loka Medieval Town

Škofja Loka is considered one of the best-preserved medieval towns in Slovenia and boasts a history of over a thousand years.

Izola

Izola is a charming coastal town on the Slovenian Adriatic with Venetian-style architecture.

Logatec

Logatec is located on a strategic route between Ljubljana and the Adriatic coast.

Vrhnika

Vrhnika is located at the western edge of the Ljubljana Marshes and is best known as the birthplace of the writer Ivan Cankar.

Kočevje

Kočevje is located in the heart of Slovenia's most extensive forest area.

Grosuplje

Grosuplje is located in the Lower Carniola region.

Ajdovščina

Ajdovščina is located in the center of the Vipava Valley and is known for its strong Bora winds and Roman remains.

Litija

Litija is located on the Sava river.

Idrija

Idrija is known for its former mercury mine, once the second largest in the world, and is a UNESCO World Heritage site.

History & landmarks

Ljubljana Town Hall

The Town Hall on Town Square in Ljubljana is the seat of the city municipality.

BTC City Ljubljana

BTC City is one of the largest business, shopping, and entertainment centers in Europe.

Postojna

Postojna is a strategically important town in the Slovenian Karst region, globally famous as the gateway to one of Europe's largest and m…

Vipava Valley

A fertile valley between the Karst and the mountains, known for the strong Burja wind and indigenous wines.

Škocjan Caves

A UNESCO World Heritage site featuring Europe's largest underground canyon and massive caverns.

Kobarid

Historical town in the Soca Valley, famous for its WWI museum and the emerald-green Soca River.

Cerkno Hill

A versatile destination in the Goriška region, known for its modern ski center and the historical Franja Partisan Hospital.

More places

Piran Town Hall

The Piran Town Hall is an elegant Neoclassical building located on the iconic Tartini Square.