Rome Underground ToursTrevi Fountain and Underground Guided Tour
This Trevi Fountain underground tour runs forty minutes, making it the shortest underground compared on this site — and the one with the neatest story. Below the streets behind the fountain runs the Aqua Virgo, an aqueduct commissioned in 19 BC that has never stopped working. The water in the fountain arrives through it.
Quick answer Forty minutes, six languages, and a €4 site
A guide, entrance to the underground excavations and headsets, in whichever of six languages you book. The site is Vicus Caprarius, the Città dell'Acqua, about ten metres below the Trevi district: an imperial-era house and the distribution tank of the Aqua Virgo. It is the cheapest archaeological site in central Rome at €4 on its own door, so what you are buying here is the explanation and the language.
Key takeaways
- See how it stacks up against every Rome underground tour compared
- The Aqua Virgo has fed the Trevi Fountain since 19 BC and still does
- Six guide languages — the widest rota of any underground compared here
- Vicus Caprarius closes on Mondays and opens 11:00 to 17:00. The rotation
- The site alone costs €4, or €2.50 with a Roma Pass, free under 14
- Weather-dependent: if cancelled you are offered another date or a full refund
About This Express Guided Tour
40 minutes
$41 per person; the site's own ticket is €4
4.33 from 2,046 reviews
English, French, German, Italian, Spanish and Portuguese
The excavations behind the Trevi Fountain, in the former Cinema Trevi
Weather-dependent; cancellation gives an alternative date or refund
Listing at a Glance
The same fields on every tour page here, read from the operator's own listing on 5 September 2026. "None stated" means the listing is silent, not that the answer is no. Prices and availability are set by the operator and confirmed at checkout.
- Tour name Trevi Fountain and Underground Guided Tour
- Operator Touriks
- Booking platform GetYourGuide
- Product ID t392231
- Starting price $41 USD per person
- Price last checked 5 September 2026
- Rating 4.33 out of 5
- Review count 2,046 reviews
- Review source GetYourGuide verified bookings
- Duration 40 minutes
- Guide language English, French, German, Italian, Spanish, Portuguese
- Transport Central, on foot
- Group size None stated
- Pickup window Check availability for pickup times
- Hotel pickup Included
- Expected return None stated
- Skip-the-line Not stated
- Minimum age None stated
- Difficulty underfoot One flight of stairs down
- Wheelchair access Not suitable for wheelchair users
- Weather and conditions Subject to weather; cancellation gives an alternative date or refund
- Cancellation 24 hours before the start time
- Reserve now, pay later Yes
- Good to know None stated
- Ethical note None stated
- Underground site entered Vicus Caprarius, the City of Water
- Site closing day Monday
- Photography Allowed
- Dress code None stated
- Booking requirement Entry included; site alone is €4
- Meeting point Behind the Trevi Fountain
Check Dates and Availability
Live prices and departures come from GetYourGuide. Free cancellation up to 24 hours before the start time.
The Aqueduct That Never Stopped
Most Roman infrastructure is a ruin. This one is still doing its job.
Nineteen BC to this morning
Agrippa commissioned the Aqua Virgo in 19 BC to supply his baths in the Campus Martius, running it largely underground from springs east of the city — which is why it survived the sieges that wrecked Rome's other aqueducts, whose exposed arches were easy to cut. It has carried water into the centre almost continuously for two thousand years, and it is what pours out of the Trevi Fountain today.
The excavation you enter holds the castellum aquae, the distribution tank where the flow was split toward different parts of the district. Standing next to working Roman hydraulics is a stranger experience than standing in a ruin.
The house above the water
The same dig uncovered a domus of the imperial period, its rooms readable in the foundations, along with finds now displayed on site — most famously a marble head of Alexander Helios. The whole complex came to light during the refit of the Cinema Trevi, which is the ordinary Roman way of finding things: someone renovates a building and hits the first century.
The site reads the city's disasters in its layers, from Nero's fire of 64 AD to Alaric's sack and the Gothic siege that cut the aqueducts.
What is included
A short list for a short tour, and everything on it is essential.
- Included: guide
- Included: entrance fees into the underground excavations
- Included: headsets to hear the guide
- Not suitable for wheelchair users
- Subject to weather; if cancelled, an alternative date or a full refund
Forty Minutes at $41, When the Site Costs €4
The honest arithmetic
Vicus Caprarius sells its own tickets at €4 full and €2.50 reduced — including for Roma Pass holders — with an audio guide at €3.50 and free entry under 14. Booking is obligatory at weekends and on holidays and advisable midweek, by phone or WhatsApp on a line staffed Tuesday to Sunday, 10:00 to 16:00. Doing it yourself is cheap.
So be clear about what this tour adds: a live guide in one of six languages, headsets, and no phone call in Italian to arrange a slot. For some visitors that is worth it and for others it plainly is not — the site is small and the labelling is decent. We would rather say so than pretend the €4 door price does not exist.
When the tour is the right call
If you are in Rome for two or three days and do not want to spend an evening on logistics, if you need a language other than English or Italian, or if you are combining it with the fountain itself and want the hydraulics explained where you can see them. The six-language rota is genuinely the widest here.
If you have time and read Italian well enough to book by WhatsApp, go direct. The hour-long Trevi district tour is the middle option: it also includes an official access ticket to the Trevi Fountain's inner perimeter, which the express version does not.
Trevi Underground Questions
What is actually underneath the Trevi Fountain?
Vicus Caprarius, the Città dell'Acqua — an imperial-era house and the castellum aquae of the Aqua Virgo, the aqueduct commissioned in 19 BC that still supplies the fountain. It sits about ten metres below street level in what used to be the Cinema Trevi.
How much does the site cost on its own?
€4 full, €2.50 reduced (Roma Pass holders, EU students 18–25, EU teachers, journalists), €1 for ages 14 to 17 and free under 14. An audio guide is €3.50. It is the cheapest archaeological site in central Rome. More cheap undergrounds.
Which day is it closed?
Monday. It opens Tuesday to Sunday, 11:00 to 17:00. Booking is obligatory at weekends and on holidays because capacity is limited.
How long is the tour?
Forty minutes, which makes it the shortest underground compared on this site. The district tour runs an hour and adds the fountain's inner perimeter.
What languages are offered?
English, French, German, Italian, Spanish and Portuguese — the widest language rota of any underground tour compared here.
Is it wheelchair accessible?
No. The listing marks it unsuitable for wheelchair users; the site is reached by a flight of stairs, though it is level once you are down.
Page last reviewed September 2026. Price, rating and review count read from the listing on 2026-09-05. Prices, availability and terms are set by the operator and confirmed at checkout.
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