25 Interesting Facts About the Trevi Fountain
•10 min readATBy AllTrips Rome Editorial Team
Researched and edited by the AllTrips team using official Rome sources, current visitor information and on-the-ground mapping data.
The Trevi Fountain is one of the most-photographed monuments in the world — but most visitors leave knowing almost nothing about it. Here are 25 genuinely interesting facts about the Trevi, gathered from Roman city archives, restoration reports, and the unbroken folklore Romans have kept alive for 260 years.
Mix them into your visit, drop one at a dinner party, or use them to plan a smarter trip. Each fact links to deeper reading where useful.
Size, water and architecture
1. It is Rome's largest Baroque fountain
26 metres tall and 49 metres wide. It is generally described as Rome's largest Baroque fountain and one of the most famous monumental fountains in the world — a global "largest" title is repeated often but hard to verify. The scale only becomes obvious when you stand at the lower basin and look up.
2. It stands against the back of a private palace
The entire architectural backdrop is the rear façade of Palazzo Poli, a 16th-century private residence. Salvi's most radical idea was to fuse the fountain into the building.
3. The water is associated with a 2,000-year-old aqueduct
The Acqua Vergine descends from the Aqua Virgo, commissioned by Marcus Agrippa in 19 BC — the Roman aqueduct with the least interrupted history of use. The modern system has been rebuilt and re-routed many times over.
4. Modern pumps recirculate about 126 litres per second
That is roughly 10.9 million litres over 24 hours, moved in a closed loop by two pumps with top-ups for evaporation. Figures of "80 million litres a day" circulate widely online but do not match the documented modern flow.
5. Travertine for the rocks, marble for the figures
The architectural façade and the artificial "scogliera" reef are largely travertine quarried near Tivoli, while marble — including Carrara — was used for the major sculptural elements.
6. The two horses represent opposite moods of water
One hippocamp is calm, the other rears violently. They are commonly read as water's dual nature: nourishing and destructive.
7. The central god is Oceanus — not Neptune
Most guides say Neptune, but the figure is usually identified as Oceanus, the personification of all water. Neptune is specifically the god of the sea.
History and construction
8. It took 30 years to build
Construction ran from 1732 to 1762, spanning four popes. Architect Nicola Salvi died eleven years before seeing it finished; Giuseppe Pannini supervised the completion.
9. Bernini worked on an earlier project for the site
Pope Urban VIII commissioned Gian Lorenzo Bernini in the 1640s to redesign the fountain. The project stalled after Urban's death, and Bernini's scheme was never built.
10. The 1730 competition outcome was disputed
Florentine architect Alessandro Galilei was an early favourite. According to the frequently repeated account, Roman objections to a non-Roman winner shifted the commission to Nicola Salvi in 1732 — an account historians treat with some caution.
11. The 'Trevi' in the name means 'three streets'
Tre vie — the small piazza was the meeting point of three streets. The rione Trevi takes its name from the same junction.
12. The water briefly turned red in 2007
Activist Graziano Cecchini dumped red dye into the basin to protest the Rome Film Festival. It took two days of intensive cleaning to restore it.
13. The 2014–2015 restoration was paid for by Fendi
The Italian fashion house funded the roughly €2.2 million restoration as a gift to the city. A glass walkway over the empty basin let visitors keep coming during the works. An earlier restoration campaign ran in 1989–1991.
Explore beneath and around the Trevi Fountain
The fountain square is free to view. Paid options include controlled close-up access, guided neighbourhood walks and the underground Vicus Caprarius archaeological site.
TiqetsTrevi Fountain tours & nearby attractions
Vicus CaprariusThe "City of Water" beneath the Trevi
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Compare all three to find the best price for your dates.These are affiliate links. If you book through them we may earn a small commission at no extra cost to you.Coins, rules and visiting
14. Recent annual coin collections have often exceeded €1 million
The total varies year to year and the city publishes it irregularly — roughly €3,000–€4,000 lands in the basin on a busy day. Rome collects the coins and passes the proceeds to the Catholic charity Caritas.
15. Taking coins out is a crime
Coins become property of the City of Rome the moment they hit the water. Roberto Cercelletta famously skimmed the basin for decades before authorities cracked down in 2002.
16. Legend says one coin brings you back to Rome
Stand with your back to the fountain, hold the coin in your right hand, toss it over your left shoulder. One coin = return. Two = romance. Three = marriage.
17. Swimming in it is illegal — fines can reach several hundred euros
Despite the Fellini scene. Wading in for a photo reliably ends with a fine on the spot.
18. Eating on the steps is prohibited
A city ordinance bans sitting on the fountain edge or eating on the steps. Enforcement is patchy but real.
19. The square is visible at any hour — the basin area is not
You can look at the fountain from the public square around the clock, but access to the closest basin area is controlled during official opening hours. Illumination switches off in the small hours.
20. A €2 close-up access fee started on 2 February 2026
It is not a ticket to see the fountain from the square. It covers controlled access to the closest basin area during ticketed hours. Residents and certain exempt groups enter free, and hours can change — check the official city page before you go.
21. Annual visitation is now estimated above 10 million
Recent reporting around the 2026 access system puts the figure above 10 million a year, though counting methodology varies because the fountain sits in an open public square. Crowd pressure is exactly why the access system exists.
For the practical side of all this — when to visit, where to stand, what the €2 close-up fee gets you — read our complete Trevi Fountain guide, or dig into the meaning of the Trevi statues and the full history of the fountain.
Screen fame and what lies beneath
22. Fellini's 'La Dolce Vita' made it globally famous
The 1960 scene of Anita Ekberg wading into the basin shifted the Trevi from local landmark to international icon. More in our piece on the Trevi in movies.
23. 'Three Coins in the Fountain' exported the coin ritual
The 1954 film won an Oscar for its title song and turned a Roman habit into something visitors worldwide feel obliged to do.
24. Roman structures and the ancient aqueduct survive beneath the Trevi area
Vicus Caprarius — an excavated Roman house and aqueduct branch marketed today as the "City of Water" — sits two minutes from the fountain. It receives far fewer visitors than the fountain above, and advance booking is sensible because the archaeological space is small.
25. The fountain was draped in black for Mastroianni
When the actor died in 1996, the city switched off the water and veiled the fountain in mourning — a tribute to the scene that defined Italian cinema abroad. Reported at the time by international press — see the sources section below.
Sources and further reading
- Turismo Roma — official Trevi Fountain page (description, access rules, restoration history)
- Associated Press — Trevi Fountain reopening (pumps, recirculation rate, coin collection)
- Reuters — reopening and crowd-control plans (visitor numbers, controlled access)
- Vicus Caprarius — the “City of Water” archaeological site (opening hours, tickets, excavation details)
- The New York Times — Marcello Mastroianni obituary (1996) (the fountain draped in mourning)
- ACEA (Acqua Vergine supply and Rome’s waterworks)
Continue reading about the Trevi Fountain
Trevi FountainWhy Is the Trevi Fountain So Famous?
The five reasons the Trevi became one of the world's most photographed fountains.
Trevi FountainThe Fascinating History of the Trevi Fountain
From the 19 BC Aqua Virgo aqueduct to Salvi's 1762 Baroque masterpiece.
Trevi FountainWho Built the Trevi Fountain?
Nicola Salvi, Pietro Bracci and the architects who created Rome's icon.
Trevi FountainWalking From the Spanish Steps to the Trevi Fountain
The 9-minute walk with the perfect coffee stop halfway.
Plan the visit itself
Frequently Asked Questions
How much money is in the Trevi Fountain?
On any given day there are only a few thousand euros in the basin, because the city collects the coins regularly. Recent annual collections have often exceeded €1 million, though the exact total varies by year. The proceeds go to the Catholic charity Caritas.
What is the most surprising fact about the Trevi Fountain?
Probably that the water still comes from the same 2,000-year-old aqueduct (the Aqua Virgo, built in 19 BC) that has run continuously since antiquity — making it the only ancient Roman aqueduct never to fall out of service.
Why do people throw coins in the Trevi Fountain?
The tradition comes from a folk belief — popularized by the 1954 film 'Three Coins in the Fountain' — that one coin tossed over the left shoulder guarantees you'll return to Rome. Two coins promise romance with a Roman, three promise marriage.
Is it true that taking coins from the Trevi Fountain is illegal?
Yes. Coins thrown into the fountain become the property of the City of Rome the moment they hit the water. Removing them is classified as theft and is actively patrolled.