Naples Underground

Naples Underground (Napoli Sotterranea) is not just an attraction, but an entire hidden world sprawling beneath the historic center of Naples. At a depth of about 40 meters under the busy streets of modern Italy lies an extensive network of tunnels that tells the centuries-old history of the city. This underground city bears witness to over 2,400 years of history, from its founding to the present day.

A tour of the underground is a true journey through time. Here, you will see the remains of the ancient Greco-Roman aqueduct that once supplied the city with water, spacious cisterns, and quarries where tuff was extracted for building the structures above. Later, during World War II, these same labyrinths served as bomb shelters for thousands of residents, and everyday items from that era can still be found here today.

The site owes much of its fame to the Neapolitan engineer Guglielmo Melisurgo, who explored and described the ancient passages in the late 19th century. Today, "Naples Underground" is one of the city's most exciting attractions, allowing visitors to see the capital of Campania from a completely unexpected perspective and touch its hidden secrets.

To plan your visit and check the current tour schedule and ticket prices, we recommend contacting the attraction administration directly. All necessary information is usually available on the official website or by phone.

A visit to "Naples Underground" is an organized journey deep into history through fascinating guided tours. Guests descend below the streets of modern Naples to explore ancient tunnels carved into the tuff rock. The main route introduces the remains of the Greco-Roman aqueduct, which for centuries supplied the city with water from the Serino River. Visitors will also see how Neapolitans in ancient times drew water from underground cisterns using jars and ropes, providing a vivid glimpse into daily life back then.

A special part of the excursion program is the Galleria Borbonica (Bourbon Gallery), which tells the story of the last 500 years of the city's history. These same spaces served as a refuge for thousands of residents during World War II, and today you can see traces of those events, adding emotional depth to the visit. In some parts of the underground complex, you can find ancient catacombs that originally served as the burial site for a noble family as far back as the 2nd century AD. Thus, the tour offers more than just a view of ruins; it’s a full immersion into the multilayered and hidden life of Naples.

Finding the entrance to "Naples Underground" is quite easy, as it is located in the heart of the historic center of Naples. The main entrance is at Piazza San Gaetano, 68, right next to the Basilica of San Paolo Maggiore. Thanks to its central location, the attraction is easy to reach on foot while strolling through the colorful streets of the old city from other popular tourist spots.

If you are in another part of the city, taking public transport is most convenient. Buses and metro trains run regularly to the historic center of Naples. For example, you can take Metro Line 1 to the Museo, Dante, or Duomo stations, which are about an 8–10 minute walk from the underground entrance. This is a fast and economical way to reach the site while avoiding the heavy traffic typical of the central part of this gem of Italy.

The history of "Naples Underground" dates back to antiquity, specifically to the 4th century BC. It all began when the ancient Greeks and Romans started extracting yellow tuff—a durable volcanic stone used for building city walls and structures. As the stone was removed, massive voids were created underground. Over time, these man-made caves ceased to be mere quarries: they were repurposed for roads, tombs, and giant water reservoirs, forming a complex and multifunctional underground infrastructure.

For centuries, these underground spaces were largely forgotten, but interest was revived in the second half of the 20th century. In the late 1960s, a group of professionals founded the first association to study the underground areas of Naples. Their goal was not only to explore and map the intricate passages but also to assess the city's safety, as historical data suggested that about a third of Naples literally stands on hollow space. For decades, comprehensive geological, anthropological, and archaeological research was conducted here, bringing many valuable artifacts to light and uncovering secrets hidden beneath the earth.

The transformation of "Naples Underground" into one of the major attractions in Italy is credited to the president of the Napoli Sotterranea Association, Enzo Albertini. In the late 1970s, he initiated the creation of a committee to restore this unique historical site, which marked the beginning of organized tours. For over 30 years, Naples Underground has been open to visitors, offering them more than just a walk through dark corridors, but a true immersion into the city's hidden history that developed alongside life on the surface.

A full visit to "Naples Underground" typically takes one and a half to two hours. This is the duration of the standard guided tour, which is mandatory for visiting this site. During this time, you will descend 40 meters beneath the busy streets of Naples, walk through the main tunnels and chambers, learn about the history of the ancient Greco-Roman aqueduct, and see the massive cisterns that once supplied the city with water.

As part of the standard tour, visitors are also shown the ruins of an ancient Roman theater hidden in the basements of modern buildings and learn how the underground passages were used as bomb shelters during World War II. It's worth noting that the route includes one very narrow tunnel, though passing through it is optional—you can bypass it by waiting for the group outside for about 10 minutes. Thus, an hour and a half is quite enough to get the main impressions; however, when planning your visit, you should also allow time for the start of the next tour, as they run on a set schedule.

The "Naples Underground" attraction is open to visitors year-round, making it accessible in any season. You can enter the underground daily from 10:00 to 18:00. Visits are conducted exclusively through organized tours. Tours in Italian depart every hour, while English tours are held every two hours—at 10:00, 12:00, 14:00, 16:00, and 18:00. This makes it easy to fit a visit to this amazing place into any Naples travel itinerary.

For individual visitors and small groups (up to 10 people), pre-booking tickets is not mandatory, but it is highly recommended, especially during peak periods such as weekends, holidays, or the summer season. Buying tickets online will help you avoid long lines, where waiting times can reach up to an hour and a half. If you are traveling with a large group or wish to request a tour in another language, such as French or Spanish, prior reservation becomes mandatory. For maximum convenience, it's always best to check the latest information and book your visit on the attraction's official website.

Visiting "Naples Underground" is just one facet of discovering the city's incredibly rich history. The historic center of Naples, where the underground entrance is located, is so densely packed with landmarks that exploring its surroundings can be an equally fascinating adventure. Many iconic sites are located just steps away, allowing you to create a full day's itinerary.

A walk through the nearby streets after diving into the subterranean world will help you better understand how the history hidden underground intertwines with life on the surface. You can see magnificent churches, visit famous museums, and experience the unique atmosphere of this part of Italy. Below is a list of interesting places within walking distance.