Naples Underground in One Day, Above and Below
Two undergrounds in a day is comfortable and three is a scramble. The constraint is not distance — the four sites sit within a mile of each other — it is four timetables that do not line up.
In this guide
- Can you really do two undergrounds in a day?
- Morning: Piazza San Gaetano, 10.00
- How far is it from number 69 to number 316?
- Midday: via dei Tribunali and lunch
- Afternoon: the Spanish Quarters or the Sanità
- How long does each leg really take?
- A shorter version, if you only have a morning
- A version with no stairs at all
- What should you book ahead, and what can you walk up to?
- Where Pompeii fits, if it fits at all
- What to do with the evening
- And if you have a second day?
- Three ways this day goes wrong
Can you really do two undergrounds in a day?
Two undergrounds and a lunch is a comfortable day. Three is a scramble, and what stops you is not distance — the four sites sit within about half an hour of each other on foot — but timetables. Three of the four run fixed departures, and they do not interlock neatly.
The version below starts at Piazza San Gaetano because two of the four undergrounds are on that one square, forty metres apart in depth and one minute apart on foot. It is the only pairing in Naples where you can do two genuinely different undergrounds without crossing the city.
Morning: Piazza San Gaetano, 10.00
Book the 10.00 departure on the official route. It is the first of the day, the queue at the entrance is at its shortest, and you come back up at about 11.30 with the whole day still in front of you.
Arrive by 09.45. The entrance is a lane off the square rather than a frontage on it, and the direction that works is the one a traveller wrote down: face the basilica and take the small road on the left, not the entrance across the square. Getting to the entrances has photographs of both doors.
How far is it from number 69 to number 316?
One minute. That is the whole journey. The San Lorenzo Maggiore ticket office opens onto the same piazza, and its excavation — the Neapolis Sotterrata — sits about ten metres down, against forty for the route you have just come out of.
Do them in this order rather than the reverse. The deep system is the harder walk and the bigger story, and it is better done on fresh legs; the Roman street afterwards is self-paced, step-free and reads as a reward.
If you want a break between the two, the square itself is the place to take it. Via dei Tribunali runs directly over the aqueduct you have just walked, which makes for the best coffee of the trip.
Midday: via dei Tribunali and lunch
Between the two undergrounds, eat. Via dei Tribunali is one of the great street-food streets in Italy and it is thirty seconds from both entrances. Allow an hour and treat it as part of the itinerary rather than an interruption — you have another descent coming.
The Neapolis Sotterrata takes forty-five minutes to ninety depending how closely you read the labels, and the complex closes at 17:30 with last admission at 17:00. Between 15 June and 30 September 2026 it runs guided visits only, on a fixed timetable, so check before you plan to walk in.
Afternoon: the Spanish Quarters or the Sanità
If you still want a third, this is where the day forks. The Spanish Quarters route is about twenty minutes west and runs at 16.30 on weekdays, with 18.00 added at weekends — which fits a day that started at 10.00 almost perfectly. The catacombs are about twenty-five minutes north, run hourly, and close at 17:00 with last admission at 17:00.
Choose the Spanish Quarters if you want more of the same kind of underground and a guide who works a tight hour. Choose the catacombs if you want something structurally different: burial galleries, fifth-century frescoes and skulls set into the ambulatory walls.
How long does each leg really take?
| Leg | On foot | Note |
|---|---|---|
| Piazza San Gaetano 69 → 316 | 1 minute | The same square |
| Piazza San Gaetano → Spanish Quarters | About 20 minutes | Downhill, through the centre |
| Piazza San Gaetano → San Gaudioso | About 25 minutes | North, into the Sanità |
| San Gaudioso → San Gennaro | About 10 minutes | Uphill |
| Molo Beverello → Piazza Bellini | About 20 minutes | The cruise-terminal walk |
| Napoli Centrale → Dante | About 10 minutes | Metro Line 1 |
Walking times at an ordinary pace through streets that are busy at most hours.
A shorter version, if you only have a morning
Do the official route at 10.00 and the Neapolis Sotterrata straight afterwards, and be finished by 13.00. That is two undergrounds, two operators, two eras and about two and a half hours of actual visiting, on one square.
It is also the cheapest pairing available: the two fares together come to roughly what one guided city walk costs, because you are buying entry rather than a guide's afternoon.
A version with no stairs at all
Start at the Neapolis Sotterrata, which is described as wheelchair accessible and sits ten metres down. Take the free audio guide, walk the Roman street, then the cloister, the Chapter Hall, the Sisto V Hall and the museum above it. That is a comfortable two hours.
Then take the superstition walk at 15.00, which stays at street level for its hour and three quarters, is described as wheelchair and stroller accessible, and covers the munaciello of the water tunnels and the cult of the pezzentelle souls. You get the underground stories without the descent.
What should you book ahead, and what can you walk up to?
Book: the official route, because the fare is non-refundable and the departure you want will go. Book: the catacombs, because a reservation is mandatory and there is no sliding into a later slot. Book: the Spanish Quarters route if you need a specific language, because the meeting point follows the language.
Walk up: San Lorenzo Maggiore, outside the summer guided-visit window. Nine euros at the desk, two more for a guide, no reservation.
Where Pompeii fits, if it fits at all
It does not fit into this day, and pretending otherwise is how people end up doing both badly. Pompeii is a half-day at minimum once you include the Circumvesuviana each way, and Herculaneum is not much less. An underground day in the centre and an excavation day outside it are two different days.
If you only have one, choose by what you want from it. Pompeii is a Roman town frozen at a moment. The tunnels under Naples are two and a half thousand years of continuous reuse in one place: quarried, plumbed, dumped in, sheltered in, and reopened. They are not competing versions of the same visit.
What does pair well with an underground morning is anything within the old town: San Gregorio Armeno, the Cappella Sansevero, or simply via dei Tribunali at lunchtime. All of them are within five minutes of the two Piazza San Gaetano entrances, and none of them needs a train.
What to do with the evening
Two options that follow naturally from the day. The first is the superstition walk, which starts at 15.00 from Piazza Bellini and finishes in Piazza San Domenico Maggiore an hour and three quarters later. It covers the munaciello who came out of the water tunnels, the cult of the pezzentelle souls, and why Neapolitans rub Pulcinella’s nose — the folklore layer sitting on top of everything you have spent the day underneath.
The second is the 21.00 Thursday departure on the official route, which needs a reservation and ten people. If your group is that size and your day is a Thursday, it is the quietest hour underground in the week and it turns the itinerary on its head: dinner first, tunnels after.
Either way, end where you started. The square above the aqueduct is a better place to finish a day about the Naples underground than anywhere with a view.
And if you have a second day?
A second day changes the shape of this entirely, because you stop having to choose. The obvious pairing is one day in the centre and one outside it: tunnels, San Gregorio Armeno and the old town on the first, Pompeii or Herculaneum on the second. Doing it in that order is better than the reverse, because the tunnels explain how a city sits on top of its own past and the excavations then read as the same idea taken to its conclusion.
If both days are in the centre, spend the second underground too, but differently. The catacombs in the Sanità are a genuinely separate subject — early Christian burial galleries, fifth-century frescoes, skulls in the ambulatory walls — and the walk up through the quarter to reach them is half the point. Add the Miglio Sacro walking tour if your second day is a Saturday, since it runs then and only then in English.
The one thing not to do with a second day is repeat the same kind of descent. Two quarry-and-aqueduct routes back to back are a lot of tuff, and the second one will not land the way the first did.
Three ways this day goes wrong
- Booking both Piazza San Gaetano sites without noticing. Some people buy the same underground twice because the listing titles do not name the site.
- Leaving the catacombs until late. Last admission is 17:00 and they close on Wednesdays.
- Underestimating the climb out. 136 steps up at the end of the first visit changes how the second one feels.
Timetables for all four sites are on hours and departure times, and every fare is on Naples Underground Tours.
Frequently asked questions
Can I really do two undergrounds in a day?
Comfortably. Two of them share Piazza San Gaetano, so the second costs you a one-minute walk and a different ticket.
What is the best order?
The deep route first, on fresh legs, then the shallow Roman excavation. The second is self-paced and step-free, which is the right way round after 136 steps.
How much walking is involved?
Very little if you stay on Piazza San Gaetano. Adding the Spanish Quarters is about twenty minutes each way; adding the catacombs about twenty-five.
Is three undergrounds in a day possible?
Possible but tight, because three of the four run fixed departures that do not interlock. Two plus a proper lunch is the better day.
What if it rains?
Nothing here closes for rain, and one listing says outright that its tour runs in it. A wet day is the best possible day to spend underground.
Where should I eat between them?
Via dei Tribunali. It is thirty seconds from both Piazza San Gaetano entrances and runs directly above the aqueduct you have just walked.
Tours that fit this trip
Picked for what this guide covers, not for what sells.
