Explore the captivating history of Rome’s iconic Trevi Fountain on this small group tour. For just $16.32 per person, you’ll venture underground to uncover the ancient Aqua Virgo aqueduct, impressive Vicus Caprarius excavation, and remnants of Imperial-era and medieval structures. With clear communication via headsets and entry tickets included, this 45-minute journey promises to immerse you in Rome’s fascinating past. Don’t miss your chance to discover the hidden wonders that lie beneath the surface.
Key Points

- This 45-minute underground tour provides access to the remains of the ancient Roman Aqua Virgo aqueduct and the Vicus Caprarius archaeological area beneath Trevi Fountain.
- The tour is priced at $16.32 per person for a small group and includes entry tickets and skip-the-line access.
- Highlights of the tour include exploring a domus of the Imperial era, visiting medieval houses, and seeing the castellum aquae built by Emperor Hadrian.
- The tour showcases the craftsmanship and technical ingenuity of the ancient Romans, with displays of ancient graffiti and inscriptions.
- The tour involves walking around the underground archaeological site and is not suitable for wheelchair users.
Tour Overview

The Trevi Fountain Underground Small Group Tour is a 45-minute experience that allows visitors to explore the archaeological history beneath the iconic Trevi Fountain.
Priced at $16.32 per person, this small group tour offers the opportunity to view the remains of the ancient Roman aqueduct, Aqua Virgo, and the impressive Vicus Caprarius archaeological area, opened in 2004.
Guests will also discover a domus of the Imperial era, medieval houses, and the castellum aquae built by Emperor Hadrian.
The tour includes entry tickets and a separate skip-the-line entrance, ensuring a hassle-free experience.
With headsets provided for clear communication, the tour runs rain or shine.
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Tour Highlights

Explore underground archaeological history beneath Trevi Fountain on this small group tour. View the remains of the ancient Roman aqueduct, Aqua Virgo, and discover the impressive Vicus Caprarius archaeological area opened in 2004. Visit a domus of the Imperial era, medieval houses, and the castellum aquae built by Emperor Hadrian.
| Tour Highlights | Description |
| — | — |
| Aqua Virgo | Remains of the ancient Roman aqueduct |
| Vicus Caprarius | Impressive archaeological area opened in 2004 |
| Domus | Explore a domus of the Imperial era |
| Medieval Houses | Visit medieval houses below the fountain |
| Castellum Aquae | See the castellum aquae built by Emperor Hadrian |
Underground Archaeology

Beneath the iconic Trevi Fountain lies a captivating world of ancient Roman history.
On this small group tour, visitors can explore the impressive archaeological area of Vicus Caprarius, opened in 2004. Here, they’ll view the remains of the ancient Roman aqueduct, Aqua Virgo, as well as a domus of the Imperial era and medieval houses.
The highlight is the castellum aquae, or water distribution center, built by Emperor Hadrian. Equipped with headsets, the tour allows clear communication with the knowledgeable guide, offering fascinating historical context that enhances the underground experience.
Aqua Virgo Aqueduct

Constructed in the 19th century BCE, the Aqua Virgo was a crucial ancient Roman aqueduct that supplied water to the Baths of Agrippa and the Trevi Fountain area.
The underground tour showcases the impressive remains of this engineering marvel, including:
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A 57-kilometer long network of underground channels.
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The original castellum aquae, or distribution point.
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Ancient graffiti and inscriptions on the walls.
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The fountain’s original water supply source.
Visitors can marvel at the incredible craftsmanship and technical ingenuity of the Romans who built this aqueduct over 2,000 years ago.
More Great Tours NearbyVicus Caprarius Excavation
The archaeological area known as Vicus Caprarius, opened to the public in 2004, offers visitors a unique glimpse into the city’s rich history.
Beneath the iconic Trevi Fountain, this site reveals the remains of medieval houses, an Imperial-era domus, and the castellum aquae – the distribution point for Emperor Hadrian’s Aqua Virgo aqueduct.
Beneath the Trevi Fountain, archaeological discoveries unveil medieval homes, an Imperial villa, and the aqueduct’s distribution point.
Guests on the Trevi Fountain Underground Tour can explore these fascinating excavations, learning about the evolution of this significant area over the centuries.
The tour provides an immersive experience, allowing travelers to step back in time and gain a deeper appreciation for Rome’s ancient past.
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Imperial Era Domus and Medieval Houses
As visitors descend into the underground excavations, they encounter the well-preserved remains of an Imperial-era domus, or Roman aristocratic townhouse.
This ancient structure offers a glimpse into the lavish lifestyles of the Roman elite. Nearby, the tour also reveals:
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The foundations of medieval houses, providing a stark contrast to the opulence of the domus.
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A castellum aquae, a distribution tank for the ancient Aqua Virgo aqueduct that once supplied water to the Trevi Fountain.
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Architectural fragments and artifacts that shed light on the evolving history of this site.
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Insights into the daily lives and experiences of those who inhabited these structures centuries ago.
Castellum Aquae of Hadrian
Visitors are then led to the impressive castellum aquae, a distribution tank built by Emperor Hadrian in the 2nd century AD to supply water to the Trevi Fountain.
This well-preserved Roman structure features impressive stone walls and arched ceilings. Guides explain how the castellum aquae collected and distributed water through an intricate network of pipes and canals, demonstrating the engineering prowess of ancient Rome.
Stepping into this subterranean chamber provides a tangible connection to the history and functionality of the Trevi Fountain, enhancing the overall tour experience.
Tour Experience and Practical Information
Although the tour includes headsets for clear communication with the guide, visitors should still expect to do some walking around the underground archaeological site.
The entry tickets are included in the tour price, allowing visitors to skip the line through a separate entrance. The tour is conducted rain or shine, so visitors should dress appropriately. The tour isn’t suitable for wheelchair users.
To ensure a smooth experience, visitors should:
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Bring a passport or ID.
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Wear comfortable shoes.
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Dress for the weather.
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Meet the guide at Piazza dei Crociferi, not the archaeological site entrance.
Common Questions
How Long Does It Take to Reach the Meeting Point From the Nearest Metro Station?
The meeting point is a short 5-minute walk from the nearest metro station. Visitors should allow enough time to arrive at the designated meeting location and look for the guide with the Rome logo sign.
Are There Any Age Restrictions for This Tour?
There are no age restrictions for this tour. Children are welcome to participate, though parents should ensure they can handle the 45-minute duration and walking involved.
Can the Tour Be Conducted in Languages Other Than English and Italian?
The tour is available in English and Italian only. No other language options are provided. Guests must be able to understand and communicate effectively in one of these two languages to participate in the tour.
Is There an Option to Extend the Tour Duration?
The tour’s duration is fixed at 45 minutes and it doesn’t offer an option to extend the tour. However, visitors can choose to explore the site further on their own after the guided tour concludes.
Are There Any Discounts Available for Students or Seniors?
There don’t appear to be any discounts specifically listed for students or seniors on this tour. However, it’s always worth checking if the operator offers any such promotions when booking.
The Sum Up
The Trevi Fountain Underground Small Group Tour offers a unique opportunity to explore the captivating history of Rome. For just $16.32 per person, you’ll gain exclusive access to ancient aqueducts, archaeological sites, and remnants of Imperial-era and medieval structures. With headsets ensuring clear communication, this 45-minute adventure is a must-do for history enthusiasts visiting the Eternal City.
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