There’s something oddly thrilling about going underground. Like slipping into the secret layer of the planet and discovering a whole hidden world most people never see.
From ancient cities carved into rock to glow worm caves and quirky modern marvels, these underground spots are anything but boring. History buffs, geology geeks, and anyone who loves an offbeat adventure — you’re in for a treat.
Here are 30 of the world’s most fascinating underground attractions to add to your travel list… especially if you don’t mind a bit of dust (or the occasional bat).
1. Wieliczka Salt Mine (Poland)
Located near Kraków, the Wieliczka Salt Mine is a remarkable underground attraction and a UNESCO World Heritage Site. This historic mine has been operational since the 13th century, extending over 287 kilometers of tunnels. Visitors can explore stunning salt-carved chapels, intricate sculptures, and grand chandeliers, all meticulously crafted from salt.
The underground chambers also feature a museum that showcases the mine’s rich history and the daily lives of its miners. Guided tours provide an in-depth look at the impressive architecture and the unique subterranean ecosystem, making Wieliczka Salt Mine a must-visit for those interested in both natural and cultural underground attractions.
Hot Tip: The temperature underground remains cool year-round, so bring a light jacket.
2. Paris Catacombs (France)
Beneath the bustling streets of Paris lies the macabre yet fascinating Paris Catacombs, one of the most intriguing underground attractions in the world. This extensive ossuary holds the remains of over six million people, meticulously arranged in decorative patterns along the 200-mile network of tunnels.
Created to alleviate the city’s overflowing cemeteries, the Catacombs offer a unique glimpse into Parisian history and architecture. Visitors can walk through dimly lit corridors adorned with skulls and bones, guided by experts who share stories of the Catacombs’ dark past. This underground attraction is eerie and captivating, perfect for those with a penchant for history and the unusual.
Hot Tip: Tickets often sell out, so it’s advisable to book your visit online ahead of time.
3. Salina Turda (Romania)
Salina Turda, a former salt mine in Romania, has been transformed into an extraordinary underground amusement park, making it one of the most unique underground attractions worldwide. Located in the heart of the Transylvanian Alps, this expansive complex features a Ferris wheel, a boating lake, a mini-golf, and even a modern-day spa. The natural salt formations create an otherworldly atmosphere, while the intricate tunnels and chambers host various entertainment and recreational activities. Salina Turda offers a perfect blend of adventure and relaxation, attracting families and thrill-seekers alike to experience its subterranean charm.
Hot Tip: Salina Turda hosts various events and concerts; check the schedule to coincide your visit with a special event.
4. Derinkuyu Underground City (Turkey)
In the region of Cappadocia, Turkey, lies Derinkuyu Underground City, an ancient subterranean marvel that once housed up to 20,000 people. This multi-level underground attraction spans 8 floors, featuring chapels, stables, storage rooms, and living quarters. Carved deep into volcanic rock, Derinkuyu was designed to protect its inhabitants from invasions and harsh weather conditions.
Visitors can navigate through narrow passageways and vast chambers, marveling at the ingenuity of ancient engineering. The city’s ventilation shafts and complex defense mechanisms highlight the sophisticated design of this remarkable underground attraction, offering a captivating journey into history.
Hot Tip: While some areas are well-lit, others are dim. A small flashlight can enhance your exploration.
5. Basilica Cistern (Turkey)
The Basilica Cistern in Istanbul is one of the most impressive underground attractions in Turkey. Built during the Byzantine Empire in the 6th century, this massive underground water reservoir once supplied water to the Great Palace of Constantinople and other important buildings. The cistern features 336 marble columns arranged in a forest-like formation, many of which are intricately carved with decorative motifs.
Soft lighting and the gentle drip of water create a serene atmosphere, perfect for exploring this architectural gem. The Basilica Cistern also houses two enigmatic Medusa heads, adding an element of mystery to this historical underground attraction.
Hot Tip: The cistern is close to other historical sites like Hagia Sophia and the Blue Mosque, making it easy to plan a full day of exploration.
6. Ajanta and Ellora Caves (India)
The Ajanta and Ellora Caves in Maharashtra, India, are stunning examples of ancient rock-cut architecture and art, making them top-tier underground attractions. Ajanta Caves are renowned for their exquisite Buddhist murals and sculptures, dating back to the 2nd century BCE.
Nearby, Ellora Caves showcase a remarkable blend of Buddhist, Hindu, and Jain art, with intricate carvings and grand temples carved directly into the rock. These UNESCO World Heritage Sites offer visitors a profound insight into India’s rich cultural and religious history, all nestled within impressive underground structures.
Hot Tip: Arrive early to enjoy the caves with fewer tourists and better lighting for photography.
7. Reed Flute Cave (China)
Reed Flute Cave, located in Guilin, China, is a natural limestone cave that has become one of the premier underground attractions thanks to its stunning stalactites and stalagmites. Known as the “Palace of Natural Arts,” the cave is illuminated with colorful lights that highlight the intricate rock formations and create a magical atmosphere.
Visitors can stroll along well-lit pathways, marveling at the vibrant calcite sculptures and underground rivers. Reed Flute Cave also hosts various cultural performances and exhibitions, enhancing the visitor experience and making it a must-see destination for nature and art enthusiasts.
Hot Tip: The pathways can be slippery and uneven; sturdy footwear is recommended.
8. Waitomo Glowworm Caves (New Zealand)
New Zealand’s Waitomo Glowworm Caves are a mesmerizing underground attraction famous for their bioluminescent glowworms. Located on the North Island, these caves feature thousands of tiny glowworms that light up the cave ceilings, creating a starry night effect. Visitors can take a guided boat tour through the subterranean passages, gliding silently under the shimmering light display.
The unique ecosystem of the Waitomo Glowworm Caves also includes fascinating limestone formations and underground streams, making it a magical destination for nature lovers and those seeking a serene underground adventure.
Hot Tip: Waitomo offers other activities like black water rafting and hiking, perfect for adventure enthusiasts.
9. Cu Chi Tunnels (Vietnam)
The Cu Chi Tunnels near Ho Chi Minh City are a vast network of underground tunnels that played a crucial role during the Vietnam War. As a significant underground attraction, the tunnels stretch over 120 miles and were used by Viet Cong soldiers for hiding, transportation, and communication. Today, visitors can explore a section of the tunnels, gaining insight into the harsh conditions and ingenious strategies employed by the soldiers.
The experience includes crawling through narrow passages, visiting underground bunkers, and learning about the tunnels’ historical significance. As one of the premier underground attractions, the Cu Chi Tunnels offer a profound understanding of Vietnam’s resilience and the complexities of underground warfare, making them a must-visit destination for history enthusiasts and adventurous travelers alike.
Hot Tip: Some areas involve climbing or crawling; wear suitable footwear and be prepared for physical activity.
10. Churchill War Rooms (England)
Situated in London, the Churchill War Rooms are an essential underground attraction for history enthusiasts. This vast underground bunker served as the nerve center for British Prime Minister Winston Churchill and his government during World War II. The meticulously preserved rooms provide an immersive experience, showcasing the conditions under which crucial decisions were made.
Visitors can explore the command center, Churchill’s private office, and the extensive network of tunnels that housed thousands of personnel. Interactive exhibits and detailed displays offer a comprehensive look at the war efforts and the pivotal role of the War Rooms in shaping history.
Hot Tip: Rent an audioguide for detailed narratives and personal stories about Churchill and the bunker’s operations.
11. Coober Pedy (Australia)
Coober Pedy, nestled in South Australia’s arid landscape, is a fascinating underground attraction that offers a unique glimpse into subterranean living. Known as the “Opal Capital of the World,” this underground town was established to escape the extreme heat of the Outback. Visitors can explore a variety of underground homes, known as “dugouts,” which are carved directly into the hillsides.
Coober Pedy is not only famous for its opal mines but also for its underground churches, such as the Serbian Orthodox Church, showcasing remarkable craftsmanship. Additionally, the town features underground shops, galleries, and even a hotel, allowing tourists to experience life below the surface. The combination of natural opal wonders and innovative underground architecture makes Coober Pedy a standout among underground attractions.
Hot Tip: While underground temperatures are stable, the desert climate outside can be extreme. Bring appropriate clothing and sun protection.
12. Salt Cathedral of Zipaquirá (Colombia)
The Salt Cathedral of Zipaquirá is a stunning underground attraction located just outside Bogotá, Colombia. This remarkable cathedral is entirely carved out of salt from a nearby mine, reaching a depth of 180 meters underground. The cathedral features impressive sculptures, intricate chapels, and beautiful lighting that highlights the natural salt formations. As visitors walk through the corridors, they encounter artistic representations of biblical scenes, all crafted with precision from salt blocks.
The Salt Cathedral also includes an underground lake and a majestic dome, creating a serene and awe-inspiring atmosphere. This unique fusion of religion, art, and geology makes the Salt Cathedral of Zipaquirá a must-visit underground attraction for travelers seeking both spiritual and visual enrichment.
Hot Tip: While photography is allowed, avoid using flash to preserve the delicate salt structures.
13. Puerto-Princesa Subterranean River (Philippines)
The Puerto-Princesa Subterranean River in Palawan, Philippines, is a UNESCO World Heritage Site and one of the most impressive underground attractions in Southeast Asia. This navigable underground river stretches for approximately 8.2 kilometers, flowing directly into the sea and passing through a spectacular cave system. Tourists embark on guided boat tours that traverse the river, marveling at the stunning limestone karsts and intricate stalactite formations that line the cave walls.
The river’s calm waters and the cool underground climate provide a refreshing escape from the tropical heat above. Along the journey, visitors can witness unique rock formations, ancient fossils, and diverse wildlife, making the Puerto-Princesa Subterranean River a captivating destination for nature enthusiasts and adventure seekers alike.
Hot Tip: Protect your belongings from the humid environment by using waterproof bags or covers.
14. Dambulla Cave Temple (Sri Lanka)
The Dambulla Cave Temple, also known as the Golden Temple of Dambulla, is a remarkable underground attraction in central Sri Lanka. This ancient complex comprises five main caves filled with exquisite Buddhist murals and over 150 statues of Buddha. Carved into a massive granite rock, the temple dates back to the 1st century BCE and has been a significant pilgrimage site for centuries. Each cave features intricate frescoes depicting the life of Buddha, alongside large reclining and standing Buddha statues that command attention.
The ceilings of the caves are adorned with colorful paintings that add to the spiritual ambiance. Surrounded by lush greenery and offering panoramic views of the surrounding landscape, the Dambulla Cave Temple showcases Sri Lanka’s rich cultural and religious heritage, making it a must-visit underground attraction.
Hot Tip: The cave environment can be warm; carry water, especially during the hotter months.
15. Forestiere Underground Gardens (USA)
Located in Fresno, California, the Forestiere Underground Gardens is a unique underground attraction that showcases the ingenuity of its creator, Baldassare Forestiere. Over 30 years, Forestiere, an Italian immigrant, hand-carved a series of underground rooms, courtyards, and passageways to escape the extreme California heat. This subterranean paradise features beautifully landscaped gardens with fruit trees, flowers, and pathways, all ingeniously integrated into the underground structure.
Visitors can explore the various rooms, including a greenhouse, a peaceful courtyard, and even an underground lake. The Forestiere Underground Gardens offer a serene and enchanting experience, highlighting the blend of natural beauty and human creativity that defines this extraordinary underground attraction.
Hot Tip: The gardens are in full bloom during spring, offering vibrant colors and a pleasant atmosphere.
16. Umoona Opal Mine (Australia)
The Umoona Opal Mine in Coober Pedy, Australia, is a captivating underground attraction that delves into the region’s rich opal mining history. Visitors can tour the mine to witness the intricate process of opal extraction and gain insights into the lives of opal miners who have made their homes beneath the earth’s surface. The mine features a museum that displays a fascinating collection of opals, mining equipment, and historical artifacts, providing a comprehensive understanding of the opal industry.
Additionally, the Umoona Opal Mine offers guided tours that take visitors deep into the tunnels, where they can observe the mining operations firsthand. This underground attraction not only highlights the natural beauty of opals but also celebrates the resilience and ingenuity of the miners, making it a must-see destination for those interested in geology and mining heritage.
Hot Tip: Participate in an opal hunting experience to try your luck at finding your opal.
17. Mount Peca Mine (Slovenia)
Mount Peca Mine in Slovenia is an adventurous underground attraction that offers thrilling activities such as underground biking and kayaking. Situated in the picturesque Karst region, this former lead and zinc mine has been transformed into a unique destination for outdoor enthusiasts. Visitors can explore the old mining tunnels on specially designed mountain bikes, navigating through narrow passages and expansive caverns.
For those seeking a more serene experience, underground kayaking tours allow adventurers to paddle through subterranean waterways, marveling at the stunning limestone formations and hidden pools. Mount Peca Mine’s blend of adventure sports and natural beauty makes it a standout underground attraction, appealing to thrill-seekers and nature lovers alike.
Hot Tip: Ensure you have suitable clothing and protective gear for biking and kayaking in underground environments.
18. Sistema Sac Actun (Mexico)
Sistema Sac Actun, located in the Yucatán Peninsula of Mexico, is the world’s longest underwater cave system and a premier underground attraction for scuba divers and spelunkers. This extensive network of cenotes and subterranean passages stretches over 348 kilometers, featuring crystal-clear waters and breathtaking geological formations.
The cave system is steeped in Mayan history, with numerous artifacts and ancient relics scattered throughout its depths. Divers can explore intricate tunnels, underground rivers, and expansive chambers, experiencing the serene beauty of this hidden world. Sistema Sac Actun offers a unique blend of adventure, history, and natural splendor, making it an essential destination for those seeking an extraordinary underground exploration.
Hot Tip: Bring waterproof cameras to capture the stunning underwater formations, but be mindful of limited light.
19. Ruby Falls (USA)
Ruby Falls, located deep within Lookout Mountain in Chattanooga, Tennessee, is a spectacular underground attraction featuring a stunning 145-foot waterfall. Discovered in 1928, this gem of an underground cave is part of the larger Chattanooga Cave system. Visitors embark on a guided tour through the illuminated caverns, culminating in the breathtaking sight of Ruby Falls cascading down the vertical shaft.
The journey includes exploring beautifully lit stalactites and stalagmites, as well as learning about the cave’s geological history and the legends surrounding its discovery. Ruby Falls also hosts a variety of seasonal events and exhibits, enhancing the visitor experience. This mesmerizing underground attraction combines natural beauty with engaging storytelling, making it a must-visit destination for both nature enthusiasts and adventure seekers.
Hot Tip: Combine your visit with other Chattanooga highlights like the Tennessee Aquarium and Rock City Gardens for a full day of exploration.
20. Gjøvik Olympic Cavern Hall (Norway)
Gjøvik Olympic Cavern Hall, situated beneath the picturesque city of Gjøvik in Norway, is the world’s largest underground auditorium and a remarkable architectural feat. Originally constructed for the 1994 Winter Olympics, this subterranean venue seamlessly integrates modern design with natural limestone formations. The cavern hall hosts a variety of events, including concerts, conferences, and sporting events, all set against the stunning backdrop of the surrounding rock walls.
The unique acoustics and ambient lighting create an unforgettable atmosphere for performances and gatherings. Additionally, the site offers guided tours that allow visitors to explore the cavern’s impressive structure and learn about its construction and significance as an underground attraction. Gjøvik Olympic Cavern Hall stands as a prime example of human ingenuity and the harmonious blend of nature and architecture, making it a noteworthy addition to underground attractions around the world.
Hot Tip: Experience the unique acoustics by attending a live performance in the cavern hall.
21. Thrihnukagigur Volcano (Iceland)
Thrihnukagigur Volcano in Iceland is a unique underground attraction that offers an extraordinary experience for adventure seekers. Unlike typical volcanoes, Thrihnukagigur is dormant and provides visitors with the rare opportunity to descend into its magma chamber. Accessible via a lift that takes you deep into the heart of the volcano, the journey reveals stunning geological formations and the vast emptiness of the magma chamber.
The guided tours highlight the volcanic history of Iceland and the scientific significance of studying such formations. This underground attraction combines natural wonder with thrilling exploration, making it a must-visit destination for those fascinated by geology and seeking a one-of-a-kind subterranean adventure.
Hot Tip: Due to the limited number of visitors allowed, it’s essential to book your tour well ahead of time.
22. Underground City (Canada)
Montreal’s Underground City, known as RÉSO, is a sprawling underground attraction that seamlessly connects shopping malls, hotels, metro stations, and residential complexes through a network of tunnels spanning over 33 kilometers. This subterranean hub offers a convenient escape from the harsh Canadian winters, allowing visitors to explore a variety of shops, restaurants, and entertainment venues without stepping outside.
The Underground City also features art installations and public spaces, enhancing the overall experience. Whether you’re looking to shop, dine, or simply wander through its extensive pathways, Montreal’s Underground City provides a vibrant and dynamic underground attraction that caters to both locals and tourists alike.
Hot Tip: Each section of RÉSO has its own unique vibe, from high-end boutiques to quirky local shops.
23. Mayakovskaya Metro Station (Russia)
Mayakovskaya Metro Station in Moscow is one of the most stunning underground attractions in Russia, renowned for its exquisite Art Deco architecture. Opened in 1938, the station features soaring pillars adorned with intricate mosaics and chandeliers that illuminate the space with a warm, inviting glow.
The design reflects the grandeur and optimism of the Soviet era, making it not just a transportation hub but also a cultural landmark. Visitors can admire the detailed craftsmanship and historical significance as they traverse the elegant concourses. Mayakovskaya Metro Station stands out as a premier underground attraction, offering a glimpse into Moscow’s rich architectural heritage and the artistic expression of its time.
Hot Tip: Visit during non-peak hours to fully appreciate the architectural details without the crowd.
24. Crystal and Fantasy Caves (Bermuda)
Crystal and Fantasy Caves in Bermuda are enchanting underground attractions that showcase some of the most beautiful limestone formations in the Caribbean. These caves feature crystal-clear pools, dramatic stalactites, and stalagmites that create a mesmerizing subterranean landscape. Guided tours take visitors through illuminated pathways, highlighting the natural beauty and geological significance of the caves.
The serene underground lakes and intricate rock formations provide a perfect backdrop for photography and exploration. Crystal and Fantasy Caves offer a tranquil and awe-inspiring experience, making them essential stops for anyone interested in the natural wonders of underground attractions.
Hot Tip: After exploring the caves, relax on Bermuda’s famous pink sand beaches for a complete day of activities.
25. Lalibela Churches (Ethiopia)
The Lalibela Churches in Ethiopia are extraordinary underground attractions that hold immense historical and religious significance. Carved directly into solid rock in the 12th century, these eleven monolithic churches are interconnected by a network of tunnels and passageways, creating a labyrinthine complex.
Each church is uniquely designed, featuring intricate carvings and expansive halls that reflect the architectural ingenuity of their creators. Pilgrims and tourists alike can explore the subterranean pathways, experiencing the profound spirituality and craftsmanship that define these sacred sites. The Lalibela Churches not only serve as important religious landmarks but also stand as remarkable examples of ancient underground attractions.
Hot Tip: Gain deeper insights into the history and religious significance by hiring a knowledgeable local guide.
26. Bunker 42 (Russia)
Bunker 42, located in Moscow, is a Cold War-era underground bunker that has been transformed into a fascinating museum and underground attraction. Originally built to withstand a nuclear attack, Bunker 42 now offers guided tours that provide an immersive experience into Soviet military history. Visitors can explore the various levels of the bunker, including command centers, sleeping quarters, and communication rooms, all preserved to reflect their original purpose.
Interactive exhibits and multimedia presentations enhance the educational aspect, offering insights into the strategic importance and daily life within the bunker during tense geopolitical times. Bunker 42 stands as a compelling underground attraction, highlighting the resilience and ingenuity of its era.
Hot Tip: Experience the bunker in a different light with a night tour, adding a dramatic effect to your visit.
27. Cenote Ik Kil (Mexico)
Cenote Ik Kil, located near the ancient Mayan city of Chichen Itza in Mexico, is a breathtaking underground attraction that captivates visitors with its natural beauty. This open-air cenote is a large sinkhole filled with crystal-clear, turquoise water, surrounded by lush vegetation and towering limestone walls. While not entirely underground, the cenote’s formation and depth create an immersive subterranean atmosphere.
Visitors can swim in the refreshing waters, dive into the cenote’s depths, or simply relax by the edge and take in the stunning surroundings. Cenote Ik Kil also features hanging vines and natural light filtering through the openings above, enhancing its magical and serene ambiance. This natural wonder is a must-visit underground attraction for those exploring the rich history and landscapes of the Yucatán Peninsula.
Hot Tip: Capture the cenote from different angles, especially from the wooden platforms surrounding the water.
28. Hang Én Cave (Vietnam)
Hang Én Cave, situated in Phong Nha-Kẻ Bàng National Park in Vietnam, is one of the world’s largest and most impressive underground attractions. Known as the third-largest cave globally, Hang Én features an extensive network of tunnels, chambers, and an underground river that winds through its vast expanse. The cave is home to a unique ecosystem, including rare species of bats and other subterranean wildlife.
Visitors can embark on guided tours that include boat rides through the dark, serene waters, allowing them to appreciate the cave’s majestic stalactites and stalagmites up close. Hang Én Cave offers an adventurous and awe-inspiring experience, making it a top destination for spelunkers and nature enthusiasts alike.
Hot Tip: Observe the cave’s unique ecosystem without disturbing the natural habitat of its inhabitants.
29. Cave of the Crystals (Mexico)
The Cave of the Crystals, located in the Naica Mine in Chihuahua, Mexico, is a spectacular underground attraction renowned for its enormous natural crystals. Discovered in 2000, this cave houses some of the largest selenite crystals ever found, some reaching up to 12 meters in length. The extreme heat and humidity inside the cave create a challenging environment, but guided tours allow visitors to witness these geological marvels safely.
The pristine, translucent crystals reflect light in dazzling ways, creating an otherworldly atmosphere that is both humbling and mesmerizing. The Cave of the Crystals stands as proof of the incredible natural processes that form such extraordinary underground attractions, drawing scientists and tourists from around the globe.
Hot Tip: The cave is extremely hot (up to 58°C or 136°F) and humid. Tours are short and involve minimal movement.
30. Catacombs of Kom el Shoqafa (Egypt)
The Catacombs of Kom el Shoqafa in Alexandria, Egypt, are a fascinating underground attraction that blends Roman, Greek, and Egyptian architectural styles. Discovered in 1900, these catacombs consist of a series of underground tombs and chambers that extend over several levels. Visitors can explore the intricately carved statues, elaborate sarcophagi, and decorative reliefs that adorn the walls, showcasing a unique fusion of cultural influences.
The Catacombs of Kom el Shoqafa offer a glimpse into ancient burial practices and the cosmopolitan nature of Alexandria during the Roman period. This underground attraction is not only a historical site but also an architectural marvel, making it a must-visit destination for history buffs and those interested in the diverse cultural heritage of Egypt.
Hot Tip: Pair your visit with other Alexandria attractions like the Bibliotheca Alexandrina and the Montazah Palace for a comprehensive tour.
30 Best Underground Attractions Around the World – Summary
So there you have it — proof that you don’t always need sky-high views to be amazed. Sometimes the real magic is below the surface, tucked away in lava tubes, old mines, or secret cities built to survive the ages.
Whether you’re chasing history, natural beauty, or just a good travel story, these underground gems serve up something totally different. Unexpected. Mysterious. And downright cool.
Add a few to your list, follow your curiosity, and don’t forget a torch (and maybe a jacket — it gets chilly down there!).
