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Just an hour from Ljubljana, Postojna Cave is one of the easiest and most rewarding day trips in Slovenia. With a guided underground tour, a unique cave train ride, and zero hiking required, it’s completely doable in half a day, making it perfect if you want a standout experience without long travel or complex planning.
Cost range: Mid-range; varies by ticket type and transport option
Best season/time of year: April to October, with early morning time slots being the best choice for fewer crowds and smoother entry
Meeting/drop-off point:
Self-drive: Postojna Cave Visitor Centre
Guided tours: Central Ljubljana pickup points
Key attractions covered:
Underground electric train ride
Guided walk through cave chambers
Stalactites, stalagmites, and the famous “Brilliant” formation
Recommended tours & tickets:
Postojna Cave Guided Tour
From Ljubljana: Postojna Cave & Predjama Castle Guided Tour
What to expect at Postojna Cave
1/5
Underground train ride
Start your visit with an electric train ride that takes you 3.7 km into the cave’s vast underground network. It’s the only double-track cave railway in the world and a highlight in itself.
Guided cave walk
Step off the train and follow a guide through enormous halls filled with towering stalactites and stalagmites. Along the way, you’ll learn how these formations took millions of years to form.
Constant cool climate
The temperature inside the cave stays at a steady 10°C all year, no matter the season outside. Carry a light jacket and comfortable walking shoes even in the summer.
Unique wildlife
Postojna Cave is home to the rare olm, also known as the “baby dragon,” a species found nowhere else. Seeing these cave-dwelling creatures adds a fascinating biological layer to the visit.
Easy pathways
The route follows wide, paved, and well-lit paths designed for smooth walking. This makes the experience accessible for families, older visitors, and anyone visiting a cave for the first time.
What to know before booking Postojna Cave tickets & tours
If you’re visiting independently, the Postojna Cave guided tour is the most straightforward option. It includes the full guided cave tour and the iconic underground train ride, letting you explore Europe’s most famous karst cave at a relaxed pace.
To see more in one visit, choose a combo of Postojna Cave & Predjama Castle guided tours. This bundled option covers both the cave and the dramatic cliffside castle nearby, saving time and money compared to buying separate tickets.
Traveling from the city? Day trips from Ljubljana combine round-trip transport with entry tickets to Postojna Cave, often adding Predjama Castle for a well-paced half-day experience. These are ideal if you want a hassle-free visit without renting a car or navigating schedules.
For a fuller Slovenia itinerary, opt for multi-destination day tours that pair Postojna Cave with highlights like Lake Bled, and Piran. These longer tours are best if you want to cover multiple must-see sights in a single day with a guide handling all logistics.
Choose the right experience for you
Postojna Cave guided tour
This option focuses only on Postojna Cave and includes a guided visit through the cave system. You’ll experience the underground train ride and walk through the main cave sections with a guide.
Best for: travelers who want to visit Postojna Cave on its own without adding other destinations
Recommended tour:
Postojna Cave Guided Tour
Day trips from Ljubljana
These guided day trips include transportation from Ljubljana and cover Postojna Cave along with additional destinations. They are designed as structured itineraries that let you visit multiple highlights in a single day without planning logistics.
Best for: visitors staying in Ljubljana who want a hassle-free day trip
Recommended tours:
From Ljubljana: Postojna Cave & Predjama Castle Guided Tour
Combo tours
Combo tours bundle Postojna Cave with Predjama Castle, and in some itineraries also include Lake Bled or the coastal town of Piran. These experiences let you cover Slovenia’s top cave, historic landmarks, and scenic highlights in a single, well-structured day.
Best for: visitors staying in Ljubljana who want a hassle-free day trip
Recommended tours:
From Ljubljana: Lake Bled, Postojna Cave & Predjama Castle
From Ljubljana: Postojna Cave, Predjama Castle and Piran Tour
Must-see highlights at Postojna Cave
Underground cave train
Begin your visit with a 3.7 km electric train ride that takes you deep into the cave system. It’s the world’s only double-track cave railway and one of Postojna’s most unforgettable moments.
Plan your visit
Open: 10am–3pm (hours vary seasonally)
Last entry: 1.5 hours before closing
Duration: It takes about 1.5 hours to explore the cave including the train ride
Book a 10am slot for a quieter experience and smoother entry before larger tour groups arrive.
Weekdays are noticeably less crowded than weekends, especially outside of school holidays.
April to June and September to October offer the best balance of comfortable travel conditions and fewer crowds.
July and August fall in peak season with the highest visitor numbers, while November to March is the quietest period, with fewer daily tour slots available.
Address: Jamska cesta 30, 6230 Postojna, Slovenia | Find on Maps
By bus: Intercity buses run regularly from Ljubljana Bus Station to Postojna. From Postojna town, you can take another bus to Caves Castle Bus Station. Nearest stop: Caves Castle Bus Station (5 mins walk)
By train: Trains operate from Ljubljana Railway Station to Postojna Station throughout the day. From the station, the cave is a short taxi or local bus ride away. Nearest station: Postojna Railway Station (7 mins by taxi)
By car: Postojna Cave is easily reached via the A1 motorway and is about 1 hour from Ljubljana. The route is well-signposted and straightforward for self-drivers. Parking: Large paid parking areas are available on-site.
Main entrance (Postojna Cave Visitor Centre)
All visitors enter Postojna Cave through the Postojna Cave Visitor Centre. This is where tickets are checked, guided tour groups are assembled, and the underground train ride begins. You’ll also find restrooms, a café, and visitor services here, making it the starting point for every cave visit.
Visitor centre amenities: The Postojna Cave Visitor Centre offers restrooms, a café, souvenir shops, and ticketing services, all located before entering the cave system.
There is limited storage available at the visitor centre for small personal items; large bags are best left in vehicles or with tour operators.
Free Wi-Fi is available in parts of the visitor centre and surrounding complex, but not inside the cave itself.
Staff are trained to assist visitors in case of emergencies, with first aid support available on-site during opening hours.
The main cave route is largely accessible thanks to the underground train and wide, paved walking paths inside the cave.
Expect some walking and a small number of stairs, which may limit access for those with reduced mobility.
Wheelchair access is possible on parts of the tour, but full wheelchair access is not available for the entire route.
Lighting is low in some sections to protect the cave environment, which may be challenging for visitors with visual impairments.
Assistance animals are not permitted inside the cave due to environmental protection rules.
Entry to Postojna Cave is only permitted as part of a guided tour at a scheduled time.
Touching cave formations, walls, or wildlife is strictly prohibited to protect the fragile environment.
Photography is allowed, but flash photography is discouraged inside the cave.
Eating, drinking, and smoking are not permitted inside the cave system.
Pets are not allowed inside the cave.
You must stay with your guide and follow marked paths at all times during the tour.
Wear comfortable walking shoes and warm clothing since there will be uneven surfaces and the cool temperature inside the cave.
Briljant Restaurant & Bar: A casual, self-service restaurant near the cave entrance serving hot meals, local dishes, and quick bites. It’s ideal before or after your cave tour.
Restaurant in Hotel Jama: Located next to the cave park, this sit-down restaurant offers Slovenian and international cuisine in a relaxed setting, suitable for longer meals.
Cafés & snack bars: Several small cafés around the visitor centre serve coffee, pastries, sandwiches, and light snacks between tours.
Ice cream & refreshments: Seasonal kiosks near the entrance sell ice cream and cold drinks, perfect for a quick treat on warmer days.
Hotel Jama: Located right next to the Postojna Cave Park, Hotel Jama is the most convenient place to stay, offering comfortable rooms and direct access to the cave complex. It is ideal for early tour slots or relaxed multi-day visits.
Postojna town accommodations: The nearby town of Postojna has a range of guesthouses, small hotels, and apartments, providing budget-friendly and family-friendly options just a short drive from the cave.
Staying in Ljubljana: You can even choose to stay in Ljubljana, about an hour away, and visit Postojna Cave on a day trip, combining the cave with other highlights like Predjama Castle or Lake Bled.
The cave complex has official souvenir shops near the visitor centre where you can browse postcards, guidebooks, and locally made keepsakes inspired by the cave. What you’ll find:
Proteus-themed gifts: You’ll find educational items, plush toys, and souvenirs featuring the proteus (olm), the rare cave-dwelling amphibian that lives in Postojna Cave.
Local products: Some shops sell Slovenian specialties such as honey, liqueurs, and small crafts, making for easy, authentic gifts.
Practical essentials: The shops also carry cold-weather accessories and small travel necessities useful for the cool cave environment.
Before you go underground: smart tips for Postojna Cave
Dress for the cave, not the weather outside: The cave stays around 10°C year-round, so bring a warm layer even in summer.
Wear sturdy shoes: Walkways are paved but can be damp and slippery in places, so good grip matters.
Arrive early for your time slot: Guided tours run on a schedule, and late arrivals may not be accommodated.
Expect a train ride + walking: The visit includes an underground train and about 1–1.5 km of walking at a relaxed pace.
Keep bags light: Large backpacks can be uncomfortable inside the cave and are best left in your car or with your tour operator.
Photography is allowed, flashes aren’t your friend: Low light and no flash help protect the cave and get better photos anyway.
Combine smartly: If you’re pairing this with Predjama Castle, visit the cave first and the castle later in the day for better flow.
Frequently asked questions about Postojna Cave tickets & tours
You can choose between a Postojna Cave guided tour and several day trips from Ljubljana that combine the cave with other destinations like Predjama Castle, Lake Bled, or Piran.
The Postojna Cave Guided Tour ticket includes entry to Postojna Cave, a guided tour led by an official cave guide, and the underground electric train ride inside the cave. The tour follows the main cave route and is conducted at a scheduled time as part of a group visit.
Predjama Castle is included in the From Ljubljana: Postojna Cave & Predjama Castle Guided Tour, From Ljubljana: Lake Bled, Postojna Cave & Predjama Castle, and From Ljubljana: Postojna Cave, Predjama Castle and Piran Tour. The standalone Postojna Cave Guided Tour does not include Predjama Castle.
Yes. The From Ljubljana: Lake Bled, Postojna Cave & Predjama Castle includes Lake Bled, and the From Ljubljana: Postojna Cave, Predjama Castle and Piran Tour includes Piran. Each of these is a full-day itinerary combining multiple destinations.
Yes. You can visit Postojna Cave alone without including other attractions nearby. Just opt for the Postojna Cave Guided Tour.
The guided tour lasts about 1.5 hours, including the underground train ride and walking through the cave chambers.
No. All visits are conducted as guided tours only, led by trained cave guides to protect the site and ensure visitor safety.
Yes, day trips that begin from Ljubljana include round-trip transportation from the city.
What to bring
Wear comfortable walking shoes suitable for uneven terrain and longer walks.
Dress for the weather and note that cave interiors can be much cooler than outside.
Pack snacks or a light lunch, especially in winter when fewer dining options are open.
Bring cash or a card for entrance fees, optional activities, and personal expenses.
Carry a valid photo ID matching the name on your booking for verification if required.
What’s not allowed
Large bags, suitcases, and oversized luggage are not permitted inside the attractions.
Pets are not allowed, except registered service animals.
Alcohol, drugs, and intoxication are strictly prohibited during the tour and at all sites.
Smoking is forbidden inside vehicles and within attraction areas.
Flash photography, tripods, and filming gear may be restricted at certain locations.
Accessibility
This tour is not suitable for wheelchair users.
It includes walking on uneven surfaces, stairs, and steep paths at various sites.
Additional information
The tour departs from Ljubljana at 8am and returns in the evening (approx. 10.5–12 hours total).
Entrance fees may vary by ticket option and are payable separately if not included in your booking.
Optional extras like the Pletna boat ride and entry to the Church of the Assumption can be purchased on site.
A minimum of two participants is required for the tour to operate.
Itinerary and timings may change due to local conditions or operational needs.
Please arrive at your pick-up point at least 10 minutes before departure time.
Inclusions
#
Guided tour of Lake Bled area
English-speaking tour guide/driver
Pick-up & drop-off from selected Ljubljana locations or central meeting point (option based)
Transfers in an AC vehicle
Entry to Postojna Cave (option based)
Entry to Predjama Castle (option based)
Audio guide in Predjama Castle (option based)
Entry to Bled Castle with cream cake (option based)
Skip the line service (option based)
You can cancel these tickets up to 24 hours before the experience begins and get a full refund.
Explore one of Europe’s most famous underground attractions with a guided visit to Slovenia’s iconic Postojna Cave.
Everything you get: A guided journey through Postojna Cave featuring the unique underground train ride, walk through vast chambers filled with stunning stalactites and stalagmites, and insights into the cave’s geology, history, and rare wildlife—including the Proteus, often called the “baby dragon.”
Why choose this: It’s the easiest and most immersive way to experience Postojna Cave, with expert guidance that brings the cave’s natural wonders to life for first-time visitors, families, and nature lovers alike.
Upgrades: Opt for a guided tour in English, German, Italian, or Slovenian, or add a guided tour of Predjama Castle for a deeper dive into history.
Inclusions
#
Walking tour of Postojna Cave
Cave train ride (3.7 km journey on the underground railway)
Audio guides at Postojna Cave available in 17 languages
Guided tour in English, Slovenian, Italian, or German (as per option selected)
Guided tour of Predjama Castle (as per option selected)
Wear warm clothing and sports footwear, as the temperature inside Postojna Cave is a constant 10°C throughout the year.
Bring a valid photo ID to match the name on your booking if requested at the entrance.
What’s not allowed
Large bags, suitcases, and oversized luggage are not allowed inside the cave or castle for security reasons.
Pets are not permitted, except for registered service animals.
Food and beverages are not allowed inside the cave or castle.
Alcohol, drugs, and any form of intoxication are strictly prohibited on the premises.
Accessibility
Cave tours are suitable for all visitors, including families with young children and visitors with mobility impairments.
However, some areas of the castle and cave may not be fully accessible for wheelchair users or those with limited mobility.
Accessible restrooms are available on site. Staff are trained to assist visitors with mobility needs.
Additional information
Postojna Cave and Predjama Castle are open daily, including public holidays and in bad weather.
The cave under Predjama Castle is open only from June to August due to bats’ hibernation during the rest of the year.
Shuttle service from Postojna Cave to Predjama Castle is available in high season (ride takes up to 20 minutes).
Boarding time for the cave train is 15 minutes before the scheduled visit.
Overnight stays and accommodation are not included in the ticket.
The experience is family-friendly and suitable for visitors of all ages.
These tickets can't be cancelled or rescheduled.
What to bring
Bring a valid photo ID to match the name on your booking if requested at the entrance.
Wear comfortable walking shoes, as the tour involves walking on uneven and sometimes slippery surfaces inside the cave and castle.
Carry a light jacket or sweater, as the temperature inside Postojna Cave is cool year-round (around 10°C/50°F).
Bring water and snacks, as food and drinks are not included in the tour.
What’s not allowed
Large bags, suitcases, and oversized luggage are not allowed inside Postojna Cave or Predjama Castle for safety and security reasons.
Pets are not permitted, except for registered service animals.
Smoking, alcohol, and drugs are strictly prohibited on the premises.
Flash photography, tripods, and filming equipment are not allowed inside the cave and castle interiors.
Accessibility
This experience is not wheelchair accessible. The cave and castle have stairs, uneven surfaces, and areas that are not suitable for guests with limited mobility.
Accessible restrooms and step-free access are not guaranteed at either site.
Additional information
Entrance fees to Postojna Cave and Predjama Castle will not be included in your ticket unless you've opted to upgrade to a ticket including it.
The tour is suitable for all ages, including children and infants, but children must be accompanied by an adult at all times.
The tour is conducted in English.
Pick-up and drop-off are provided from central Ljubljana.
The tour operates daily and year-round, but itineraries are subject to change and are for reference only.
The tour is rated as 'Easy', but some walking and stair climbing are required.
The tour requires a minimum of two participants to operate.
Please arrive at the designated pick-up point at least 10 mins before the scheduled departure time.
Inclusions
#
Visit Postojna Cave & Predjama Castle
English speaking driver/guide
Comfortable transportation
Pick up and drop off in central Ljubljana
Entry ticket to Postojna Cave (as per option selected)
Entry ticket to Predjama Castle (as per option selected)
Audio guide in Predjama Castle (as per option selected)
Skip the lines (as per option selected)
Exclusions
#
Food and beverages
Personal expenses
Tips
You can cancel these tickets up to 24 hours before the experience begins and get a full refund.
What to bring
Bring a valid photo ID to match the name on your booking.
Wear comfortable walking shoes, as the tour involves walking on uneven surfaces and through caves.
Carry a light jacket or sweater, as temperatures inside Postojna Cave can be cool year-round.
Bring water and snacks, as meals and drinks are not included in the tour.
What’s not allowed
Large bags, suitcases, and oversized luggage are not allowed inside the cave or castle for security reasons.
Pets are not permitted, except for registered service animals.
Smoking, alcohol, and drugs are strictly prohibited during the tour and at all attractions.
Flash photography and tripods may be restricted inside Postojna Cave and Predjama Castle.
Accessibility
Accessibility for wheelchair users and guests with limited mobility is not guaranteed at all sites.
Some areas, especially within Postojna Cave and Predjama Castle, may not be accessible due to stairs, uneven terrain, and narrow passages.
Additional information
Entrance fees to Postojna Cave and Predjama Castle are not included and must be paid separately on site.
The tour operates with a minimum of two participants.
The experience is suitable for families, with options for children aged 0–1 and 2–9 to join.
The tour is conducted in English by a professional guide/driver.
The itinerary includes approximately 90 minutes at Postojna Cave, 90 minutes at Predjama Castle, and 120 minutes in Piran.
The tour operates year-round, but weather conditions may affect certain aspects of the experience.
Inclusions
#
Visit Postojna Cave, Predjama Castle, and Piran town
Comfortable transportation
English speaking guide/driver
Exclusions
#
Entrance fees to Postojna Cave and Predjama Castle
Meals and drinks
Personal expenses
Tips
You can cancel these tickets up to 24 hours before the experience begins and get a full refund.
Day Trips
From Ljubljana: Lake Bled, Postojna Cave & Predjama Castle Tour
What to bring
Wear comfortable walking shoes suitable for uneven terrain and longer walks.
Dress for the weather and note that cave interiors can be much cooler than outside.
Pack snacks or a light lunch, especially in winter when fewer dining options are open.
Bring cash or a card for entrance fees, optional activities, and personal expenses.
Carry a valid photo ID matching the name on your booking for verification if required.
What’s not allowed
Large bags, suitcases, and oversized luggage are not permitted inside the attractions.
Pets are not allowed, except registered service animals.
Alcohol, drugs, and intoxication are strictly prohibited during the tour and at all sites.
Smoking is forbidden inside vehicles and within attraction areas.
Flash photography, tripods, and filming gear may be restricted at certain locations.
Accessibility
This tour is not suitable for wheelchair users.
It includes walking on uneven surfaces, stairs, and steep paths at various sites.
Additional information
The tour departs from Ljubljana at 8am and returns in the evening (approx. 10.5–12 hours total).
Entrance fees may vary by ticket option and are payable separately if not included in your booking.
Optional extras like the Pletna boat ride and entry to the Church of the Assumption can be purchased on site.
A minimum of two participants is required for the tour to operate.
Itinerary and timings may change due to local conditions or operational needs.
Please arrive at your pick-up point at least 10 minutes before departure time.
You can cancel these tickets up to 24 hours before the experience begins and get a full refund.
Book now, pay later
Book now without paying anything. Cancel for free if your plans change.
10 hr. 30 min. - 11 hr. 30 min.
Audio guide
Transfers available
Pickup available
Tickets
Postojna Cave Guided Tour
Explore one of Europe’s most famous underground attractions with a guided visit to Slovenia’s iconic Postojna Cave.
Everything you get: A guided journey through Postojna Cave featuring the unique underground train ride, walk through vast chambers filled with stunning stalactites and stalagmites, and insights into the cave’s geology, history, and rare wildlife—including the Proteus, often called the “baby dragon.”
Why choose this: It’s the easiest and most immersive way to experience Postojna Cave, with expert guidance that brings the cave’s natural wonders to life for first-time visitors, families, and nature lovers alike.
Upgrades: Opt for a guided tour in English, German, Italian, or Slovenian, or add a guided tour of Predjama Castle for a deeper dive into history.
From Ljubljana: Postojna Cave & Predjama Castle Guided Tour
What to bring
Bring a valid photo ID to match the name on your booking if requested at the entrance.
Wear comfortable walking shoes, as the tour involves walking on uneven and sometimes slippery surfaces inside the cave and castle.
Carry a light jacket or sweater, as the temperature inside Postojna Cave is cool year-round (around 10°C/50°F).
Bring water and snacks, as food and drinks are not included in the tour.
What’s not allowed
Large bags, suitcases, and oversized luggage are not allowed inside Postojna Cave or Predjama Castle for safety and security reasons.
Pets are not permitted, except for registered service animals.
Smoking, alcohol, and drugs are strictly prohibited on the premises.
Flash photography, tripods, and filming equipment are not allowed inside the cave and castle interiors.
Accessibility
This experience is not wheelchair accessible. The cave and castle have stairs, uneven surfaces, and areas that are not suitable for guests with limited mobility.
Accessible restrooms and step-free access are not guaranteed at either site.
Additional information
Entrance fees to Postojna Cave and Predjama Castle will not be included in your ticket unless you've opted to upgrade to a ticket including it.
The tour is suitable for all ages, including children and infants, but children must be accompanied by an adult at all times.
The tour is conducted in English.
Pick-up and drop-off are provided from central Ljubljana.
The tour operates daily and year-round, but itineraries are subject to change and are for reference only.
The tour is rated as 'Easy', but some walking and stair climbing are required.
The tour requires a minimum of two participants to operate.
Please arrive at the designated pick-up point at least 10 mins before the scheduled departure time.
