Top 10 Largest Underground Cities In the world 2026

by Jamesty January 13, 2026, 9:48 pmupdated January 16, 2026, 8:34 am 134 Comments

The world above ground offers treasures galore, but beneath our feet exists a fascinating network of underground towns, each with its own unique history and purpose. From ancient refuges carved into rock to modern subterranean complexes, these hidden worlds give a look into human inventiveness and the yearning for shelter and companionship. As we head into 2026, let’s look into the top 10 largest underground cities in the world, investigating its scale and significance.

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1 List Of Top 10 Largest Underground Cities In The World 2026

1.1 1. Pilsen, Czech Republic

1.2 2. Reso, Montreal, Quebec, Canada

1.3 3. Setenil de las Bodegas, Spain

1.4 4. Underground Atlanta, Atlanta, Georgia, United States

1.5 5. Burlington, England

1.6 6. Derinkuyu capadocia

1.7 7. Wieliczka Salt Mine

1.8 8. Dixia Cheng, Beijing, China

1.9 9. Moose Jaw underground Tunnels

1.10 10. Shanghai Tunnels, Portland, Oregon, United States

List Of Top 10 Largest Underground Cities In The World 2026

1. Pilsen, Czech Republic

Pilsen, also known as Plzeň in Czech, is the fourth-largest city in the Czech Republic and is widely recognized among people all over the world as the origin of Pilsner beer. Pilsen, on the other hand, would be doing a disservice to its rich tapestry of history, vibrant culture, and increasing creativity if it were to be defined just by its golden brew. The city of West Bohemia is a lively metropolis that offers a fascinating balance of historical landmarks, thriving arts sectors, and a forward-thinking culture. This combination makes the city a riveting destination for tourists and a proud home for the people who live there.

2. Reso, Montreal, Quebec, Canada

RÉSO is a hidden treasure that lies beneath the bustling streets of Montreal, Quebec, a bustling metropolis that is well-known for its traditional European allure and dynamic cultural scene. A sprawling subterranean world that is an integral part of the daily lives of Montrealers and offers a unique way to navigate the city, particularly during its long and challenging winters, RÉSO is more than just a network of tunnels; it is a sprawling subterranean world that is often referred to as the Underground City (Ville Souterraine in French).

3. Setenil de las Bodegas, Spain

Setenil de las Bodegas is a genuinely remarkable settlement that can be found in the province of Cadiz, which is located in the very center of Andalusia. The buildings and streets of Setenil are literally built under and into large overhanging rocks, which is a beautiful and one-of-a-kind architectural masterpiece. This is in contrast to the conventional whitewashed towns that dot the Andalusian landscape. Because of the unique way in which nature and human habitation have been harmoniously combined, it has been given the title of being one of the most engaging and unforgettable locations in Spain.

4. Underground Atlanta, Atlanta, Georgia, United States

Underground Atlanta is a historic district that has a story that is unlike any other. It is located beneath the present hustle and bustle of the district in downtown Atlanta, Georgia. It is more than simply a shopping and entertainment complex; it is a physical link to the city’s past. It is a site where old stores and cobblestone streets whisper stories of a time that has long since passed. Underground Atlanta is stirring with new vitality once again, with the goal of reclaiming its position as a lively hub for art, culture, and entertainment. This coming after multiple transitions and periods of dormancy, Underground Atlanta is once again stirring.

5. Burlington, England

The sea plays a significant role in several aspects of Bridlington’s history. Throughout the course of its history, its natural harbor has been an extremely important factor. It has been discovered that there is evidence of Roman occupation in the region; nonetheless, the foundation of a priory in the 12th century was the event that effectively established Bridlington as a geographic location. With its splendid nave that has been preserved, Bridlington Priory is a witness to the town’s importance throughout the medieval period. It was once one of the most significant religious houses in the region.

6. Derinkuyu capadocia

Derinkuyu is a subterranean masterpiece that continues to enchant and intrigue people. It is located in the center of Turkey, within the strange landscapes of Cappadocia. In the province of Nevşehir, this historic multi-level underground city provides a fascinating peek into the inventiveness and resiliency of ancient civilizations. It is located close to the present town of the same name. Derinkuyu is not simply a collection of tunnels; rather, it is a complex, self-contained world that is capable of sheltering thousands of people, along with their animals and supplies. It is located an amazing 85 meters (280 feet) below the surface of the earth.

7. Wieliczka Salt Mine

The Wieliczka Salt Mine is a stunning UNESCO World Heritage site that is located deep inside the ground and is only a short distance away from the ancient city of Krakow, which is located in Poland. Over the course of more than seven hundred years, this magnificent mine was responsible for the production of salt. It evolved into an essential component of Poland’s economy and left behind a legacy of intricate chambers, breathtaking salt sculptures, and a one-of-a-kind underground world that continues to attract tourists from all over the world.

8. Dixia Cheng, Beijing, China

There is a vast and largely forgotten subterranean network known as Dixia Cheng, which literally translates to “Underground City.” This network is located beneath the bustling streets of Beijing. This extraordinary complex, which is sometimes referred to as the “Underground Great Wall,” is a relic of the time period known as the Cold War. It is a physical representation of China’s fears and preparations for the possibility of conflict.

9. Moose Jaw underground Tunnels

A network of underground tunnels can be found just beneath the surface of the seemingly peaceful city of Moose Jaw, which is located in the province of Saskatchewan, Canada. This history is both fascinating and somewhat controversial. These passageways, which are shrouded in local legend and a touch of mystery, have become a popular tourist attraction at the city because they offer glimpses into the intriguing history of the establishment.

10. Shanghai Tunnels, Portland, Oregon, United States

The Shanghai Tunnels, also known as the Old Portland Underground, are a shadowy network of passageways that can be found beneath the charming streets and vibrant culture of Portland, Oregon. These passageways are known locally as the Underground. A bygone era, a time when the city’s bustling waterfront held both opportunity and a darker undercurrent, is represented by these interconnected basements and tunnels, which are primarily located beneath the Old Town Chinatown neighborhood. These tunnels and basements share stories with one another.