Italy · Rome
From above you see a maze of walls where the arena floor once lay. The view is familiar, yet it is the product of two millennia: construction, games, earthquakes, quarrying, consecration and excavation. Begin by asking what has actually been laid bare here.
The amphitheatre stands in a valley between the hills of Rome. The Roman Forum and the Palatine lie within sight and share its park administration and the UNESCO World Heritage listing of the historic centre. To understand the Colosseum, read it together with its surroundings. Source: UNESCO · Historic Centre of Rome
Through the centuries
Choose a period. See how the story changes over time.
In the early Republic the Roman Forum has already been drained and built up: since the late seventh century BCE it has grown into the centre of public life, a role it will keep for over a thousand years. The valley of the future Colosseum lies beside it; of an amphitheatre there is no trace.
Source: Parco archeologico del Colosseo · The Roman ForumAfter the fire of 64, Nero builds the Domus Aurea; in its grounds an artificial lake collects the water of the surrounding hills. On that very spot Vespasian begins the amphitheatre in the 70s, and Titus opens it in 80. Domitian adds the uppermost tier and has storerooms installed beneath the arena.
Source: Treccani · Enciclopedia Italiana, Colosseo (G. Lugli, 1931)Into late antiquity the Colosseum remains a venue for animal hunts and gladiatorial combat. In 438 Valentinian III abolishes the gladiatorial games; a slow, steady decline follows. The building stands, but loses its purpose.
Source: Parco archeologico del Colosseo · The ColosseumEarthquakes accompany the Colosseum from late antiquity onwards: around 500 the arena and podium are damaged, in 1349 a severe earthquake brings collapses, and in 1703 further arches fall on the south side. Today’s silhouette, with its low southern half, is the result of this sequence, not of a single day.
Source: Dipartimento della Protezione Civile · Historical earthquakes and the ColosseumFor centuries the ruin serves as a quarry, a workshop and a stable. From the sixteenth century tradition regards it as a site of Christian martyrdom; in 1750 Benedict XIV consecrates the Colosseum to the Passion of Christ and installs fourteen Stations of the Cross. The quarrying ends, and the monument acquires a new meaning.
Source: Vatican News · Via Crucis al Colosseo (2025)Carlo Fea, commissioner of antiquities in Rome, has the arena excavated from 1811; groundwater halts the work. When walls emerge beneath the arena in 1813, Fea takes them for later additions and insists the arena lay at ground level: a mistake, as it turns out. Only in 1874, and finally in the 1930s, is the hypogeum fully exposed.
Source: Treccani · Dizionario Biografico degli Italiani, Carlo FeaSince 1996 a German-Italian team led by Heinz-Jürgen Beste has surveyed the hypogeum stone by stone. From grooves, channels and beam sockets it reconstructs winches, lifts and ramps for animals and scenery. The underground has been open to visitors since 2010; the arena floor above it is a partial modern reconstruction.
Source: Smithsonian Magazine · Secrets of the Colosseum (H.-J. Beste, DAI Rom)Look closer
Entry was free, but seats were not a matter of choice. Seventy-six numbered arches led into the building, and 29 numbers are still legible on the north side. Inside, marked routes guided spectators to their tiers: senators at the bottom, knights behind them, then the further tiers up to the wooden seats of the plebs beneath the colonnade at the very top.
Source: Parco archeologico del Colosseo · The Cavea of the Colosseum and the Belvedere TerraceReading the place
Buildings and finds reveal more when we consider their context. These close readings connect the evidence with questions to take on a visit.
In the hypogeum, the team led by Heinz-Jürgen Beste recorded semicircular recesses in the walls, paired vertical channels, floor holes with bronze collars and diagonal slots. It interprets them as clearance for capstans, as guides for cages and platforms, as bearings for shafts and as seats for ramps. Four main building phases could be distinguished; the park describes a timber substructure at the inauguration, translated into masonry under Domitian.
Evidence / source: Smithsonian Magazine · Secrets of the Colosseum (H.-J. Beste, DAI Rom, 2011)Read the walls beneath the arena not as corridors but as the negative imprint of an installation of timber, rope and metal. Every groove had a counterpart that has vanished. The researchers built models from these traces and tested whether cage, winch and ramp actually fit together. A bewildering plan thus becomes a sequence: animals below in the dark, men at the capstans, scenery rising through the floor. The photograph from above shows the stage without its machinery.
The number of capstans and the exact mechanics are reconstructions from traces and written sources, not surviving machines. Which installation operated in which building phase, and what was staged on a given day, cannot be derived from them.
Below the upper cornice sit projecting corbels on which, according to Lugli, the masts of the velarium rested, the awning that shaded the spectators. Written sources link its operation to sailors of the fleet at Misenum. Nothing of the cloth, timber or rigging survives.
Evidence / source: Treccani · Enciclopedia Italiana, Colosseo (G. Lugli, 1931)Find the uppermost ring of wall in the photograph and imagine a crown of masts above it. The velarium is a case for indirect seeing: the evidence is a row of supports that makes no sense without its load. Only together with the texts does it become a sail. How far it spanned the arena and how it was rigged remain matters of competing models, including the historic wooden models of the building.
Corbels attest to a structure at this point, not to its form. A continuous roof, a ring of canvas or separate strips are different interpretations of the same evidence.
A geological study of the subsoil shows a Holocene alluvial valley beneath the southern half of the Colosseum and firmer ground beneath the northern half. The historically recorded earthquake damage is concentrated in the south; the authors attribute this to amplified ground motion in the soft sediments. The civil protection department lists damage around 500, the severe earthquake of 1349 and the loss of arches on the south side in 1703.
Evidence / source: Funiciello, Lombardi, Marra, Parotto · Seismic damage and geological heterogeneity in Rome’s Colosseum area (1995)Compare the tall north side with the low south side in the photograph. The familiar silhouette is thus also a map of the ground beneath: the same tremor strikes the two halves differently. Quarrying adds to the effect, since fallen blocks lay ready and were carried away. A famous outline becomes a sequence of causes that reinforced one another.
Geology explains why damage is unevenly distributed; it does not date any single collapse. Which arch fell in which earthquake, and what was removed afterwards, must be answered separately from building archaeology and written sources.
Plan a visit
The Parco archeologico del Colosseo sells tickets itself and requires a booked time slot for the Colosseum; sales open 30 days in advance. The arena and the underground are included only in certain ticket types.
Tickets are issued in the holder’s name and are valid only with identification. Check for every offer whether the arena, the underground or the attic are actually included; a standard ticket covers only the first and second tiers. The Forum and Palatine have their own entrance and opening hours.
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Visiting sources checked on 24 September 2026. Prices and availability are provided by the operator.
Keep exploring
01AI vision80The inaugural gamesFrom the hundred days of games in the year 80 through earthquakes, quarrying and consecration to the excavation of the arena: the time journey from the seating tiers.Start the journey 02Checked 25 Sep 20262026Tickets & admission€18 for the Colosseum, Forum and Palatine, timed entry required, arena or underground for €24, free Sundays, Roma Pass, metro.Plan your visit 
03Own plan20 sitesThe mapPlan of the Colosseum, the Roman Forum and the Palatine with every entrance, ticket office and metro station.Open the map 04Real photoColosseumOverviewReading an amphitheatre: from Nero’s lake to the machinery beneath the arena and the ruin used as a quarry.Overview These texts combine published research with editorial explanation. Some dates are approximate. Photographs show documented surviving conditions. Specialist archaeological review is still pending.
View from the upper tier into the Colosseum: the exposed hypogeum, the partly reconstructed arena floor and the tiers opposite. Photograph taken on 15 September 2022. Diego Delso / Wikimedia Commons · CC BY-SA 4.0. Resized to 1600 pixels wide and compressed as WebP; no crop or content alterations. Framing varies by screen. Derived photograph under the same licence.
