Have you ever wondered what lies beneath the surface of our planet? From hidden cities to surreal caves, there’s a whole world to explore underground.
The Caribbean for Less Than You Think
Up to 65% off + a resort credit + a free night at select Sandals resorts. 8 islands. 17 resorts. All-inclusive everything. See the deals →
Get ready to be amazed as we uncover some of the most incredible underground destinations you might not even know exist. These hidden gems are sure to ignite your sense of adventure and curiosity!
Derinkuyu Underground City, Turkey

Derinkuyu Underground City in Turkey is a marvel of ancient engineering, extending to depths of around 60 meters (200 feet) in the Cappadocia region. This subterranean metropolis could house up to 20,000 people, complete with livestock and food stores, making it a true underground haven.
Developed fully during the Byzantine era, it features elaborate tunnels, chapels, schools, and ventilation systems, all designed to support life during times of war and invasion. Discover the ingenuity and resilience of ancient civilizations as you roam through this incredible underground city!
Wieliczka Salt Mine, Poland

The Wieliczka Salt Mine in Poland is an awe-inspiring subterranean wonder, with origins dating back to the 13th century. Located near Kraków, this UNESCO World Heritage site features an extensive network of tunnels, chambers, and chapels all carved from rock salt.
The crowning jewel is the Chapel of St. Kinga, a breathtaking underground church adorned with salt-made chandeliers, altars, and sculptures. Explore this underground marvel to witness the extraordinary craftsmanship and rich history that make it one of the most amazing underground destinations you didn’t know existed!
Waitomo Glowworm Caves, New Zealand

The Waitomo Glowworm Caves in New Zealand are a must-see natural wonder, famous for their unique bioluminescent glowworms that create a magical starry sky effect on the cave ceiling. Located on the North Island, these caves are home to the Arachnocampa luminosa, tiny creatures that emit a mesmerizing blue-green light.
The most enchanting part of the experience is the Glowworm Grotto, where you can glide silently on an underground river beneath the twinkling lights. This surreal spectacle, combined with the caves’ stunning limestone formations, makes Waitomo one of the most amazing underground destinations you didn’t know existed!
Salt Cathedral of Zipaquirá, Colombia

The Salt Cathedral of Zipaquirá in Colombia is a breathtaking underground church carved entirely out of salt within a former salt mine about 50 kilometers north of Bogotá. This awe-inspiring cathedral, spanning nearly 8,500 square meters and situated 200 meters underground, is a marvel of engineering and artistry.
Visitors enter through dimly lit tunnels, encountering sculpted Stations of the Cross before reaching the amazing central nave, illuminated by a massive salt cross. The intricate carvings and serene atmosphere make this one of the most amazing underground destinations you didn’t know existed.
Batu Caves, Malaysia

The Batu Caves in Malaysia are a famed natural and cultural landmark featuring a series of limestone caves housing Hindu temples and shrines. Located just north of Kuala Lumpur, these caves boast a striking 42.7-meter (140-foot) tall golden statue of Lord Murugan at the entrance, the tallest of its kind in the world.
Visitors can ascend 272 steps teeming with playful macaques to reach the Temple Cave, where a high vaulted ceiling and colorful Hindu statues create a cathedral-like atmosphere. The site also features the Dark Cave, known for its unique flora and fauna, making Batu Caves a fascinating underground destination you didn’t know existed.
Catacombs of Paris, France

The Catacombs of Paris are a captivating and eerie underground ossuary that holds the remains of over six million people, tracing back to the late 18th century. Constructed in response to overcrowded cemeteries, these labyrinthine tunnels stretch for miles beneath the city, featuring walls of neatly arranged bones and skulls.
Located about 20 meters (65 feet) below the surface, the Catacombs are both haunting and visually striking, with sections like the Crypt of the Sepulchral Lamp showcasing artistic bone arrangements. A visit here offers a unique glimpse into Paris’s history and its macabre yet fascinating approach to death and burial practices.
Cenote Angelita, Mexico

Cenote Angelita in Mexico is a truly unique and mesmerizing underwater cave located in the Yucatán Peninsula. Known for its surreal “underwater river,” this cenote features a thick layer of hydrogen sulfide that creates an ethereal fog-like effect at around 30 meters (98 feet) deep.
Divers descend through crystal-clear freshwater to witness this magical phenomenon, which appears as a white riverbed flowing through a submerged forest. The experience is both visually stunning and otherworldly, making Cenote Angelita one of the most amazing underground destinations you didn’t know existed.
Cu Chi Tunnels, Vietnam

The Cu Chi Tunnels in Vietnam are an extensive underground network that played a pivotal role during the Vietnam War, stretching over 120 kilometers (75 miles) near Ho Chi Minh City. These ingeniously designed tunnels served as living quarters, command centers, and supply routes for Viet Cong guerrilla fighters, offering them mobility and protection.
Visitors today can explore a portion of the tunnels, which provide a compelling glimpse into the resourcefulness and resilience of the Vietnamese forces. The experience of navigating these narrow, dark passageways offers a thought-provoking look at the harsh conditions endured by the tunnel inhabitants.
Setenil de las Bodegas, Spain

Setenil de las Bodegas in Spain is a charming small town renowned for its unique architecture, with many houses and shops built directly into and under large rock overhangs. Located in Andalusia’s Cádiz province, this picturesque town seamlessly blends natural and man-made elements, creating captivating streets like Calle Cuevas del Sol and Calle Cuevas de la Sombra, where rock formations loom overhead.
The town’s history dates back to Roman times and flourished during the Moorish period, adding a rich cultural layer to its striking visual appeal. Enjoy exploring shaded, tunnel-like pathways and sampling delicious local tapas in this one-of-a-kind underground destination you didn’t know existed.
Salina Turda, Romania

Salina Turda in Romania is a stunning example of adaptive reuse, transforming a former salt mine into a spectacular underground amusement park. Located in Turda, Transylvania, this unique destination blends historical significance with modern entertainment, offering attractions like a Ferris wheel, mini-golf, a bowling alley, and a boating lake within its expansive chambers.
The salt mine, dating back to antiquity and extensively mined since the 17th century, now captivates visitors with its breathtaking salt formations and recreational facilities. Salina Turda is an unforgettable underground wonder you didn’t know existed, providing both fun and educational experiences.


