Rome has aqueduct ruins scattered across the city, from a massive green park on the outskirts to underground sites steps from the Trevi Fountain. Some are towering stone arches you can walk right up to, others are hidden beneath department stores and city streets. Here’s where to find them.
Parco degli Acquedotti: The Best Single Stop
The Park of the Aqueducts is the most dramatic aqueduct site in Rome and the one place where you can see multiple aqueducts in a single visit. Seven aqueducts pass through this sprawling green space on the city’s southeastern edge: the Anio Vetus, Anio Novus, Aqua Marcia, Aqua Tepula, Aqua Iulia, Aqua Claudia, and the Aqua Felix. The park is free to enter and open daily.
Not all seven are equally visible. Many of the older aqueducts ran underground, and later construction absorbed or destroyed their above-ground sections. The Aqua Marcia, which was the first Roman aqueduct to use the signature arch system, still has two well-preserved sections behind the Casale di Roma Vecchia farmhouse. The Aqua Tepula and Aqua Iulia were incorporated into later structures and are no longer independently visible. The most photogenic ruins belong to the Aqua Claudia and Anio Novus, which share a single towering arched structure where their two channels were stacked on top of each other. At peak capacity, these two aqueducts alone delivered nearly 400,000 cubic meters of water per day to ancient Rome.
The Aqua Felix, built by Pope Sixtus V in the Renaissance, is the one aqueduct here that still functions. Its arches are clearly visible up to Porta Furba, where it begins to overlap the older Claudia aqueduct on its way toward the city center.
To get there, take Metro Line A toward Anagnina and exit at the Giulio Agricola stop. Walk down Viale Giulio Agricola and you’ll reach one of the park entrances at the end of the street. Late afternoon light is ideal for photography, when the sun hits the arches from the west and the park empties out. Budget at least an hour to walk between the major structures.
Porta Maggiore: Where Eight Aqueducts Met
Porta Maggiore sits at a busy intersection in eastern Rome, and most people pass it on a tram without realizing what they’re looking at. This was the point where eight of the city’s eleven ancient aqueducts converged, making it the most important water distribution hub in ancient Rome.
The structure you see today was originally built as a monumental section of the Aqua Claudia and Anio Novus aqueducts under Emperor Claudius. Two grand arches, each about 6 meters wide and 14 meters tall, once straddled two major Roman roads: the Via Labicana and Via Praenestina. The arches are flanked by pilasters with Corinthian columns, and the whole thing is built from travertine stone with the rough, deliberately unfinished look known as rusticated masonry that was fashionable during Claudius’s reign.
Look up at the top section, called the attic, and you’ll see three horizontal bands of inscriptions. The highest one, from Claudius himself, celebrates the construction of the two aqueducts. Below it are inscriptions added later by emperors Vespasian and Titus, recording their own restoration work. You can examine all of this from the sidewalk. Porta Maggiore is served by the Porta Maggiore tram stop on lines 3, 5, and 14, and it’s a short walk from Termini station.
The Aqua Virgo: A Working Ancient Aqueduct
The Aqua Virgo is the only ancient Roman aqueduct still functioning. Built in 19 B.C., it originally supplied water to the Campus Martius district. Today, water from its course still feeds some of Rome’s most famous fountains, including the Trevi Fountain, where the aqueduct terminates at the foot of the Quirinal Hill, and the Fountain of the Tortoises in Piazza Mattei.
You can’t see the aqueduct’s channel at these fountains, but you can see it in two unexpected indoor locations. Vicus Caprarius is an underground archaeological site beneath the Trevi district that contains the remains of a water distribution point for the Aqua Virgo. The site has limited capacity, and reservations are mandatory on weekends and holidays (book by phone or WhatsApp at +39 339 7786192). Entries run every 30 minutes.
Even more surprising, a section of the Aqua Virgo sits in the basement of La Rinascente, the high-end department store on Via del Tritone. The preserved section dates to 19 B.C. and occupies a dedicated space in the lower level used for exhibitions. It’s free to visit during store hours. This is the same aqueduct that still carries water from the area near the Spanish Steps toward Vatican City.
The Alexandrine Aqueduct in Tor Pignattara
The Aqua Alexandrina was the last of Rome’s great aqueducts, built in 226 A.D. by Emperor Alexander Severus to supply his baths in the Campo Marzio area. Its simple brick arches, remodeled several times over the centuries, are visible along Via di Tor Pignattara in the residential neighborhood east of the city center. The aqueduct ran above ground through this stretch before returning underground as it approached Porta Maggiore. It’s not a major tourist destination, which makes it a quieter alternative if you want to see aqueduct ruins without crowds.
What You’re Actually Looking At
Roman aqueducts worked entirely by gravity. Engineers aimed for a consistent downward slope of about 0.02 percent, or roughly 20 centimeters of drop per kilometer. That precision allowed water to flow from springs in the hills east of Rome all the way into the city without any pumps. The Aqua Appia, Rome’s first aqueduct, was completed in 312 B.C. after about 18 months of construction. It ran just over 10 miles to cover a straight-line distance of about 7.5 miles, delivering an estimated 54,750 cubic meters of water daily.
The iconic arched structures most people picture are only the above-ground portions. Much of every aqueduct’s length ran underground in covered channels. The arches were needed where the terrain dipped and the water channel had to be elevated to maintain that gentle downhill grade. When you see a tall row of arches in the park or at Porta Maggiore, you’re looking at a valley crossing, a section where engineers built the channel high enough to keep gravity doing its work across a low spot in the landscape.
Over the centuries, newer aqueducts were often built directly on top of older ones to save on construction. This layering is visible throughout the Park of the Aqueducts, where the Renaissance-era Aqua Felix follows the path of the ancient Aqua Marcia, and the Aqua Claudia carries the Anio Novus on its back. Understanding this stacking helps make sense of why seven aqueducts passed through one park but only two or three distinct structures are visible.