Guide and underground tickets are included at €52 per person, pickup is not. Fine for children, and it runs in rain.
In our comparison: #16 of 46 in Catacombs & Underground Rome, by rating weighted by review volume (see the comparison).
2 options from the operator, described in its own words. Prices are the operator's from-prices per adult for a party of two. Click an option to book it on Viator. Guide languages on every option: English.
| Option | What the operator says | From, per adult |
|---|---|---|
| Trevi Fountain Underground Aqueduct and Spanish Steps TourThe page price | Small Group of max 12 people Starting point: Piazza di Spagna, 18, 00187 Roma RM, Italy | €52 |
| Start by the Trevi Fountain | Small Group of max 12 people: this option covers the exact same sights, just in different order Starting point: Piazza Accademia di S. Luca, 77, 00187 Roma RM, Italy | €52 |
Children from €47 (ages 5 to 14). Option texts and prices come from the operator's listing; prices checked on Viator on 25 September 2026.
98% of ratings with a star breakdown are 4★ or 5★: 226 of 230
Star breakdown of all 230 ratings
Reviewers praise the guides and aqueduct history, but some expect more underground exploration.
Written by Guidekin from the 100 most recent English reviews on Viator & Tripadvisor (7 May 2026 to 2 October 2026). Refreshed as new reviews arrive; last checked 3 October 2026.
Reviews are shown as the platforms publish them and removed when they disappear there.
Ratings collected from Guidekin, Viator & Tripadvisor.
This is where we'll meet and start our tour! You'll learn what Piazza di Spagna is for the Romans today, as well as the history of how it became the way it is today. The glamorous side of Rome since ancient Roman times until today. Here you'll also learn that the Spanish steps.. are not Spanish at all! You'll be surprised to learn why. Then we'll learn about the iconic fountain of la Barcaccia, which is still today fed with an ancient Roman aqueduct of over 2000 years! And this is where our journey through water starts..
30 minThis column is tied to the local traditions around Christmas time
15 minHere we'll start seeing parts of the aqueduct visible overground, as well as a mysterious door right next to it..
15 minThis is a department store.. but we're not here for shopping! You'll learn that pretty much anything in Rome can turn into a museum, because the modern city is literally built on top of the ancient one! In fact underground this mall we'll get to see the ruins of the only ancient Roman aqueduct still functioning today!
15 minThe iconic Trevi fountain, one of the most photographed spot in Rome. But how many people know of its significance? You'll learn of the legends and stories which go hand-in-hand with the fountain, since ancient Roman times until today.
15 minHere you'll learn where all the water of the Trevi fountain comes from! We'll walk underground to explore the ancient water tank of the aqueduct built in 19BC! This place is such a "lasagna" of history, with layers of buildings and homes of people that have lived here through the centuries. People just like us today..
30 min · Admission includedThis is a small and intimate group walking tour of no more than 12 people.
We'll start by the Spanish steps, where you'll learn everything about them and why they're called like this (you'll be surprised!).
By the Spanish steps we'll meet the first fountain of the tour. This is where we'll begin a journey through the aqueducts of Rome! In fact this fountain is still fed today by an ancient Roman aqueduct built in 19BC!
From here we'll follow the aqueduct which is, for the most part, underground. And by casually walking through this itinerary we’ll find parts of the aqueduct appearing between the modern buildings.
We'll follow the aqueduct until its monumental end: the Trevi fountain. But we won't stop here.
We'll get away from the crowds, turn the corner and discover the underground water reservoir that the ancient Romans built over 2000 years ago!
During this walking tour you won't just see the specific site, but learn also how modern Rome was built around the ancient ruins.
The operator's own notes, grouped by topic. Nothing here is added by Guidekin.
For a full refund, cancel at least 24 hours before the scheduled departure time.
| Tour | Price | Duration | Rating | Group |
|---|---|---|---|---|
| This tour · #16 of 46 | €52 | 2h | 4.88 (230) | shared, max 12 |
| Appian Way, Catacombs and Aqueducts Park Tour with Top E-Bike | €75 | 4h | 4.99 (991) | shared |
| Walking Tour at Catacombs as the Coolest Underground | €48 | 2h | 4.98 (503) | shared |
| Rome Bike / EBike Tour: Appian Way, Catacombs & Roman Aqueducts | €59 | 4h | 4.94 (1953) | shared |
Ranked #16 of 46 in Catacombs & Underground Rome by Guidekin score (rating weighted by review volume). Prices here run from €22 to €470, median €75; typical length 2h 38m. 7 of 46 are private. Figures are live from the tour cards; the rubric is our handpicked set, not the whole market. Compare all 46 Catacombs & Underground Rome