Koper to Grotta Gigante and Postojna Cave: Day trip
Private ride with a local driver
7h 30mRound tripPrivate driver
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About your trip
Descend into two separate subterranean marvels on a day that bridges nations and reveals nature’s awe-inspiring depths!
Exclusively yours: private vehicle and professional driver
Discover local insights you won't find in guidebooks
Experience the freedom to explore at your own speed
Perfectly planned for families, friends, or solo travelers
What to expect
Your day trip begins wherever you are
Meet our professional driver right where you prefer in Koper whenever suits you best. No time wasted getting to the pickup point, grab your bag and start your trip right away.Discover more with local expertise
Your driver’s local insights will set the tone for your day trip. A hidden café here, a must-try restaurant there; insider tips you’ll love sharing later. This isn’t a guided tour but your ride will be rich with stories and discoveries along the way. And throughout the day, your driver will be available for you as needed, ready to assist, happy to help, making your trip stress-free.Explore at your own pace
After arriving in Grotta Gigante, you'll have the freedom to explore its vast underground chamber before continuing on to Postojna Cave, where you can see the famous stalagmite formations and ride the underground train, all at your leisure. Meanwhile, your driver will wait for you nearby, ensuring a stress-free return trip.
Perfect for any private group
Whether you're traveling solo, as a family with kids, or as a large group, this service is tailored for your comfort and flexibility. It's the ideal option especially if you have limited time or a busy schedule.Good to know
- Two-way private car transfer
- Air-conditioned vehicle
- Personalized pickup and drop-off
- Professional English-speaking driver
- Complimentary bottled water
- Free cancellation 24 hours before departure
- Entry/Admission tickets to paid attractions Grotta Gigante and Postojna Cave should be purchased separately unless specified otherwise
- Meals, snacks, and gratuity are not included
From US$173
per person
Select date and travelers
Free cancellation up to 24 hours before your pickup time.
For a group of 1-3 travelersTotalUS$519
Your trip at a glance
Your trip at a glance
Start in Koper
You choose the pickup spot. Grotta Gigante
Feel free to explore at your own pace and discoverStop: 2 h 30 min - admission not included
Delve into the mysterious depths of the world's largest tourist cave system, admiring incredible displays of ancient stalactites and stalagmites that get more dramatic as you descend.
What to see
- Intricate mineral formations and hidden caverns
- The massive main hall, the largest of its kind in Europe
What to do
- Descend 330 feet (100 meters) to see the surreal formations hidden in its chilly depths
- Visit the family-friendly immersive science museum on the surface, offers fascinating insight into the cave's geological history
What to bring
- The internal temperature is constantly around 52 degrees Fahrenheit (11 C), so pack a light jacket
Take note
- HOURS: Closed Mondays, Open for tours Tuesday through Sunday from 10:00-12:00 and 14:00-16:00
- Reservations are required; book online here: https://www.grottagigante.it/en/home/
Postojna Cave
Feel free to explore at your own pace and discoverStop: 3 hours - admission not included
Continue your subterranean journey by visiting Slovenia's intriguing Postojna Cave, where geological formations mimic the mountains and rivers of the country above.
What to see
- Walking paths below the surface descend past intricate karst formations, murmuring springs, and winding rivers
- Aquarium exhibits housing unique cave-dwelling olms, often called "Baby dragons."
What to do
- Take the underground train tour to explore the vast underground halls, including the fairytale-esque "Dance Hall"
Take note
- Expect year-round cool temperatures in the caves
- Tickets must be purchased in advance: https://www.postojnska-jama.eu/en/tickets/
Back to Koper
We’ll take you back to your starting point.Duration of the stops can be changed upon request after booking
Have questions or need help?
Contact our Customer Support. We are available 24/7Daytrip is loved all around the world. Here's why.
Know more about your day trip
Both Grotta Gigante and Postojna Cave welcome travelers of various ages. Postojna Cave is particularly family-friendly thanks to its underground train ride, which makes a large portion of the cave accessible without strenuous walking. Grotta Gigante involves descending and climbing many steps, which may be challenging for those with mobility issues or young children. Reviewing each site's accessibility info before booking is highly recommended.
Yes, advance booking is highly recommended for both sites. Postojna Cave has scheduled tour times and can sell out, especially in summer. Grotta Gigante also operates on tour schedules and is closed on Mondays. Booking online ahead of time secures your preferred time slots and helps coordinate your day with the driving schedule. Both attractions offer guided tours in multiple languages, including English.
Grotta Gigante is about 15 miles (24 km) from Koper, with a drive of roughly 35 minutes. Postojna Cave is approximately 41 miles (66 km) from Koper, around a 50-minute drive. The full day trip lasts about 7 hours and 30 minutes, which includes round-trip driving, 2 hours and 30 minutes at Grotta Gigante, and 3 hours at Postojna Cave, with travel between the two sites.
The route between Koper and the caves passes through the Slovenian Karst region, known for its rugged limestone landscapes, vineyards, and traditional villages. You may see signs for attractions such as Lipica Stud Farm, home to the famous Lipizzaner horses, and Skocjan Caves, another UNESCO site. The town of Postojna itself is charming, with cafes and restaurants serving local Slovenian dishes near the cave entrance.
Grotta Gigante is one of the largest show caves in the world, located near Trieste in northeastern Italy. Its main hall is enormous, big enough to fit Saint Peter's Basilica inside. Visitors descend a marked path to admire massive stalactites and stalagmites formed over millions of years. A small science museum on the surface explains the cave's geology, making it both an educational and visually stunning subterranean experience.
Postojna Cave is Slovenia's most visited natural attraction and one of the most famous cave systems in Europe. Stretching about 15 miles (24 km), it features striking karst formations, underground rivers, and the unique olm, a rare cave-dwelling amphibian known as the "baby dragon." A highlight of the visit is the underground train ride that takes guests deep into the cave before a guided walk through its grand chambers and "Dance Hall."
Bring a warm sweater or light jacket, as both caves stay cool year-round, regardless of outside conditions. Wear sturdy, closed-toe shoes with good grip since paths can be damp and slippery. A small backpack for water, snacks, and a camera is useful. Since photography may be restricted in some areas, check rules at each site. Cash or card for entry tickets and souvenirs at both locations is also recommended.
The caves can be visited year-round since their internal temperature remains stable and cool regardless of the season. Summer is the most popular time and can mean larger crowds, especially at Postojna. Visiting in spring or autumn offers a more relaxed experience with shorter wait times. Winter visits can be magical, particularly around Christmas when Postojna hosts a famous Live Nativity within the cave.
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