Archaeological remains of the Stadium of Domitian beneath Piazza Navona
Underground Rome · Places · 07

Stadium of
Domitian

Beneath Piazza Navona survives the imperial stadium whose footprint still determines the shape of one of Rome's most recognisable urban spaces.
Piazza Navona
86 AD
Imperial Rome
Piazza Navona
Modern Street
≈ 4.5–6 m
Stadium
01 The Place
Campus Martius
Rione Parione
Rome

The ancient building is still visible in the modern city.

Piazza Navona did not acquire its elongated form by accident.

The buildings surrounding the modern square developed over and around the structures of the Stadium of Domitian, while the open space of the ancient arena remained largely free from construction.

The result is unusual: even before descending underground, the plan of an imperial monument can still be read at the scale of the modern city.

Ancient structures of the Stadium of Domitian below modern Rome
Stadium of Domitian · Archaeological Level
02 Present Ground / Ancient Ground

Below the level of Piazza Navona.

≈4.5 m

The archaeological area at Tor Sanguigna lies approximately 4.5 metres below the present street.

Other remains associated with the stadium survive at different points beneath the buildings surrounding Piazza Navona.

As elsewhere in Rome, the precise depth varies according to the location and later development of the site.

03 The Footprint

A stadium written into the city plan.

The Stadium of Domitian was a long masonry building with parallel sides and a curved end.

Its form differed from a Roman circus: it was designed primarily for athletic contests and did not contain the central spina characteristic of circus racing.

Stadium of
Domitian
approximately 265 m
approximately 106 m
04 Architecture

Built for athletic competition.

Domitian's stadium brought the architecture of Greek-style athletic competition into a monumental Roman setting.

01

The Arena

The long central space provided the setting for athletic contests and public competition.

02

The Cavea

Spectator seating surrounded the arena and was supported by the masonry substructures whose remains survive around Piazza Navona.

03

The Façade

The exterior was organised as two levels of arcades, with architectural elements in travertine and brick construction behind them.

05 Stadium → Piazza

The building disappeared. Its geometry did not.

Piazza Navona preserves the footprint of the ancient stadium at the scale of an entire urban space.

Later buildings rose over the seating structures around the perimeter, while the former arena became the open space of the piazza.

The ancient monument therefore survives in two forms: physically in archaeological remains below and geometrically in the city above.

06 Surviving Architecture

Fragments of a building larger than the excavation.

What can be visited or observed today represents only portions of a monument whose complete footprint extended beneath the modern urban fabric.

07 What Survives

One monument, dispersed remains.

Tor Sanguigna A substantial archaeological sector preserves structures from the northern curved end of the stadium.
Buildings Additional remains survive beneath several buildings surrounding Piazza Navona.
Sant'Agnese Structures associated with the stadium are also preserved beneath the church of Sant'Agnese in Agone.
Urban Form The most extensive surviving trace is the shape of Piazza Navona itself, inherited from the ancient stadium's footprint.
08 Reading the Site

Archaeology does not stop at the excavation wall.

At Piazza Navona, the ancient monument can be read simultaneously below ground and in the geometry of the modern city.

The archaeological fragments explain the construction of the stadium. The piazza above reveals what happened to its footprint over the following centuries.

Together they show how a Roman building can disappear architecturally while continuing to organise urban space.

09 Access

The archaeological area is undergoing restoration.

Restoration · Reopening

The archaeological area at Tor Sanguigna is undergoing restoration works before returning to public access.

Visiting arrangements should therefore be checked before planning a visit. Other traces of the stadium remain distributed beneath the urban fabric surrounding Piazza Navona.

Area Via di Tor Sanguigna 3, at the northern end of Piazza Navona.
Status Restoration works are preparing the archaeological area for renewed public access.
Depth The Tor Sanguigna archaeological sector lies approximately 4.5 metres below present street level.
Planning Check current visitor conditions before including the archaeological area in an itinerary.
Check current visitor information →
11 Continue the Atlas

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12 Private Journeys

Read the ancient city through the modern one.

Underground Rome designs private archaeological journeys around the city below street level, selecting sites according to your interests, available time and the access genuinely available during your stay. Tell us your dates and group size; we’ll check site access and prepare a private route proposal with a clear quote.

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