Photo: Armando Mancini from Napoli, Italia · CC BY-SA 2.0 · editedUnderground Naples
- Not step-free
- Good on a rainy day
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Marco Bellucci · CC BY 2.0 · edited
Why go
- The guided underground tour, covering about 2,400 years of history from the Greek foundation to today.
- The aqueduct tunnels, barely one man wide, with traces of ancient hydraulic plaster still on the walls.
- The wartime air-raid shelters, where more than 4,000 people took cover, with furniture and graffiti still surviving.
- The War Museum at the end of the tour, with documents and objects from June 1940 to September 1943.
Opening hours
Today10:00 – 20:00Show all
Don't miss
- Nero's 'lost' theatreNero wanted to perform here. Two massive arches in via Anticaglia once held up the outer structure, and a hidden hatch under a bed leads to the foundations.Via Anticaglia, in the underground area reached from Piazza San Gaetano. On the map
- Greco-Roman theatreA theatre from the 4th to 2nd century BC, in the same underground area as Nero's theatre.In the underground area reached from Piazza San Gaetano.4th to 2nd century BC On the map
- Underground places of worshipCatacombs and pre-Christian cult burial chambers are among the underground remains.In the underground area reached from Piazza San Gaetano. On the map
- Museum of the underground, Piazza CavourA museum lies beneath Piazza Cavour in a huge quarry cavity, with replicas of Greek hypogea and ancient finds. Artifacts were found during more than half a century of exploration.Beneath Piazza Cavour. On the map
- Ancient forum in a mud slideAn ancient forum, preserved in a mud slide, is among the underground remains.Among the underground remains, reached from Piazza San Gaetano. On the map
Interesting facts5
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About a third of Naples rests on underground voids.
History - Napoli Sotterranea -
900,000 square
Known cavities cover about 900,000 square metres, and only two of them are natural.
Sottosuolo di Napoli - Wikipedia -
15,000 years
The ground rests largely on yellow tuff, ash erupted about 15,000 years ago. It is easy to carve, yet strong enough for self-supporting galleries.
Sottosuolo di Napoli - Wikipedia -
Each building made of tuff matched an open void below, often right under the same building.
Sottosuolo di Napoli - Wikipedia -
Co.R.E. Gallery, a contemporary art gallery at the entrance of the site, shows modern art in the underground spaces. Admission is free.
The Path - Co.R.E. Gallery - Napoli Sotterranea
Shorts
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Secret Underground Helped Build All of Naples Italy | Underground Mar…Science Channel
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Insta vs reality – going underground in NaplesDW Travel
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Mysterious Underground Pools of Napoli Sotterranea | Naples Undergrou…vivereperamare
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Amazing..Underground NaplesRitz Creativity
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Tips to visit Naples underground cityMat and Angie
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Naples Underground | The Underground City Beneath Naples, ItalyItalia Uncovered
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📍Toledo Station, Naples 🇮🇹This isn't just a metro station—it's an und…Bella Italia TV
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Naples Underground 🕯 - Napoli Sotterranea (ITA/ENG)Visit Naples
Tips for your visit
- Expect 140 steps down from Piazza San Gaetano, 40 metres below the road, before the walk starts.
- The aqueduct and a shelter can also be seen on via Sant'Anna di Palazzo, in Chiaia.
- Leave time for the War Museum, which has collected war documents since March 2008.
- The site's phone number is +3907731841319.
Best time to visit
- Monday to Friday and Sunday are the longest days of the week.
- Saturday is the shortest day, closing two hours before the weekday closing time.
Legends and hidden details
- Legend has it that Nero wanted to perform in the underground theatre and bribed spectators to applaud him.
- The pozzari, water-system cleaners, entered homes through private well shafts, which fed a local legend.
Photo spots
- Top of the steps, Piazza San GaetanoThe stairway leads down from Piazza San Gaetano to the underground walk.Piazza San Gaetano, at the main access to the site. On the map
- Piazza Cavour quarry cavityTuff quarrying left cavities with sloping shoulders that kept them from caving in; this one is a huge quarry cavity.Beneath Piazza Cavour. On the map
Sources: Naples underground geothermal zone - Wikipedia · Home - Napoli Sotterranea · History - Napoli Sotterranea · The Path - War Museum - Napoli Sotterranea · Napoli sotterranea - Wikipedia · Sottosuolo di Napoli - Wikipedia · Underground Naples: description (its own site) · The Path - Co.R.E. Gallery - Napoli Sotterranea · checked 18 Oct 2026
- Website
- napolisotterranea.org/
- Phone
- +3907731841319
Questions and answers
What are the opening hours of Underground Naples?
Underground Naples is open Monday to Friday and on Sunday from 10:00 to 20:00. On Saturday it is open from 10:00 to 18:00.
How do I get to the Underground Naples entrance?
Main access is from Piazza San Gaetano 68, near the basilica San Paolo Maggiore, and from via Sant'Anna di Palazzo in Chiaia.
Is Underground Naples wheelchair accessible?
No. The entry from Piazza San Gaetano has no step-free route, so the way down is by stairs.
Is the Co.R.E. Gallery at Underground Naples free?
Yes. Admission to the gallery's exhibitions at the entrance of the underground site is free.
Are there guided tours of Underground Naples?
Yes. Parts of the site are open to guided tours run by cultural associations, which also stage shows in the tunnels.
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