El Jem, Tunisia: The Colossus of a Vanished City
Across the open plains of central-eastern Tunisia, an immense structure of honey-coloured stone rises above the rooftops of the modern town of El Jem.
It appears almost unexpectedly, its tiers of arches climbing high into the North African sky, monumental and strangely solitary. From a distance, little in the surrounding landscape prepares the visitor for its scale. Yet here stands one of the greatest amphitheatres of the ancient world, built nearly eighteen centuries ago by a prosperous Roman African city whose wealth and ambition have otherwise largely disappeared.
That city was Thysdrus.
Today, much of ancient Thysdrus lies beneath or beyond the streets of modern El Jem. Its temples, houses, baths, and public spaces have mostly vanished or survive only as foundations and fragments. Yet its amphitheatre endured, immense enough to outlive the city that created it.
Its surviving walls remain the most dramatic expression of a place that once flourished among vast olive groves, enriched by the agricultural wealth of Roman Africa and connected through trade to the wider Mediterranean world.
Thysdrus and the Wealth of the Olive Groves
The earliest history of Thysdrus remains uncertain. Archaeological discoveries reveal occupation during the Punic period, including a Punic necropolis, while the settlement may have even deeper indigenous origins. It emerges more clearly into recorded history during the campaigns of Julius Caesar in North Africa during the first century BCE.
Under Roman rule, Thysdrus gradually transformed.
Its position was advantageous. Important routes crossed the surrounding plains, connecting the agricultural interior of North Africa with ports along the Mediterranean coast. Through these roads passed produce, merchants, travellers, and wealth.
Above all, there were olives.
Across the countryside surrounding Thysdrus, olive trees spread over an increasingly cultivated landscape. Their oil became one of the great commodities of Roman Africa, transported in amphorae across the Mediterranean and consumed throughout the Empire.
As the trade flourished, so did Thysdrus.
Local landowners and merchants accumulated considerable fortunes. Houses became larger and more elaborate; public buildings more ambitious. The city acquired baths, temples, a forum, a circus and luxurious villas decorated with marble, fountains, painted walls and intricate mosaics.
Thysdrus was no remote settlement at the margins of the Roman world. It was a confident and prosperous African city, participating fully in the cultural and commercial life of the Empire.
Nothing expresses that confidence more powerfully than its great amphitheatre.
The Great Amphitheatre
Constructed during the third century CE, probably beginning around the turbulent period of 238 CE, the amphitheatre of Thysdrus was conceived on an astonishing scale.
Unlike many ancient arenas that were partly cut into hillsides, the amphitheatre rose freely from level ground. Its enormous weight was carried through a complex arrangement of arches, pillars, galleries and vaults, creating a monumental structure that seemed almost to have been built from air and stone.
Approximately 148 metres long and 122 metres wide, the amphitheatre could accommodate around 35,000 spectators.
Three immense levels of arcades originally surrounded the exterior. Inside, rising tiers of seating enclosed the elliptical arena, arranging the population of Thysdrus according to the hierarchies of Roman society. The wealthy and powerful sat closest to the spectacle, while ordinary citizens filled the ascending rows above.
On days of games, thousands would have streamed towards the amphitheatre from the city and surrounding countryside.
The arena that appears so silent today would have been filled with movement, noise, and anticipation. Gladiators fought before the crowds, while wild animals were brought into the arena for elaborate hunts and spectacles.
Beneath the floor survives another world.
Long underground galleries and chambers once held animals, equipment, and the machinery required for the performances above. Shafts opened towards the arena, allowing cages and animals to be raised dramatically into the sunlight.
Walking through these subterranean passages today, the immense structure takes on a darker character. Above are the soaring arches and open sky; below are narrow corridors of stone once filled with animals, handlers and men waiting for whatever awaited them in the arena.
Then, emerging again into the light, the scale of the amphitheatre becomes overwhelming.
From the surviving upper levels, the arena lies far below, enclosed by rings of stone. Beyond the arches, the plains of Tunisia stretch towards the horizon.
For a moment, ancient Thysdrus seems less distant.
A City in Rebellion
The years surrounding the construction of the amphitheatre were among the most dramatic in the history of Thysdrus.
In 238 CE, resentment against the financial demands imposed during the reign of Emperor Maximinus Thrax erupted into rebellion. Wealthy landowners and citizens of Thysdrus turned to the elderly provincial governor Gordian and proclaimed him emperor.
His son, Gordian II, was declared co emperor.
Their revolt helped ignite the extraordinary political turmoil remembered as the Year of the Six Emperors, when imperial authority fractured and Rome passed through a rapid succession of rulers.
The uprising did not last.
Gordian II was killed in battle near Carthage by forces loyal to Maximinus. After hearing of his son’s death, Gordian I took his own life.
Yet the family survived politically. Later that same year, the young Gordian III became emperor.
The precise relationship between these events and the construction of the great amphitheatre remains uncertain. Nevertheless, the monument belongs to this remarkable period, when Thysdrus possessed enough wealth, population, and civic ambition to imagine an arena comparable with those of the greatest cities of the Roman world.
It was perhaps the city’s supreme statement of confidence.
The Monument That Refused to Disappear
The prosperity that created the amphitheatre eventually faded.
As the Roman world changed during Late Antiquity, Thysdrus diminished. Political instability, shifting trade patterns, and the transformations of North Africa gradually altered the city that had grown wealthy through its surrounding olive lands.
The amphitheatre, however, acquired another life.
Its enormous walls made it a natural fortress. Long after the gladiators and crowds had vanished, people sought protection within the same structure that had once been built for spectacle.
Centuries passed.
Stone was removed from parts of the monument and reused in buildings throughout the town. Sections of the outer walls were damaged or disappeared entirely. Yet enough remained to preserve the extraordinary form of the ancient arena.
The city around it faded, but the amphitheatre proved harder to erase.
Today, its arena, subterranean passages, galleries, vaults, and sweeping arcades remain among the most impressive survivals of Roman Africa. The monument was inscribed on the UNESCO World Heritage List in 1979.
Its preservation is remarkable, but what gives El Jem its particular atmosphere is something more difficult to measure.
Rome’s Colosseum stands amid the monuments, traffic, and restless movement of one of the world’s great cities. At El Jem, the experience is different.
Here, the amphitheatre seems almost detached from the world that created it.
It rises above modest streets and whitewashed buildings, surrounded by a landscape that still stretches towards distant olive country. The city that once filled its seats has largely disappeared, leaving its greatest monument towering above another town, another civilisation and another age.
The emptiness around it somehow magnifies its scale.
The Lost Houses of Thysdrus
Yet the amphitheatre tells only one part of the story.
To understand the people who built it, the quieter remains of ancient Thysdrus are just as revealing.
The El Jem Archaeological Museum preserves some of the finest mosaics discovered in the villas and public buildings of the ancient city.
Here, the vanished world of Thysdrus becomes unexpectedly intimate.
Mythological figures once familiar to the inhabitants of the city appear again across floors of coloured stone. Dionysos, Orpheus, the Muses, and other figures from the classical imagination share these elaborate compositions with animals, plants, geometric designs, and scenes of spectacle and daily life.
They are not merely decorative survivals.
They reveal something of the aspirations of the people who commissioned them: prosperous families who lived within spacious houses arranged around courtyards and gardens, surrounded by fountains, marble and imagery drawn from the mythology and culture of the wider Mediterranean world.
The mosaics remind us that Thysdrus was more than its amphitheatre.
It was a place of homes and gardens, of private rooms opening onto colonnaded courtyards, of families living behind decorated walls while the great arena rose somewhere beyond them.
The House of Africa
Beside the museum, an archaeological park preserves remains of several Roman residences, including the House of the Peacock, the House of the Dolphins, and the Sollertiana Domus.
Most remarkable is the reconstructed House of Africa, based upon an enormous aristocratic residence uncovered during archaeological excavations.
The original villa occupied approximately 3,000 square metres and contained richly decorated rooms, courtyards and baths. Its scale reflects the extraordinary wealth that existed in Thysdrus during its most prosperous centuries.
Among its finest discoveries was an exceptional mosaic depicting the goddess Africa.
Crowned and richly personified, she represents the province itself, a fertile land that had become one of the great agricultural regions of the Roman Empire. Another remarkable mosaic represented Rome and the provinces.
Seen within El Jem, these images possess an added resonance.
The amphitheatre demonstrates the public power of Thysdrus; the villas reveal its private prosperity.
Together they evoke a city whose citizens looked simultaneously towards Rome and towards the fertile African landscape from which their wealth had grown.
The Colossus of Thysdrus
Ancient Thysdrus has largely disappeared, its streets, villas and public spaces reduced to fragments beneath the modern town.
Beyond El Jem, olive trees still grow beneath the Tunisian sun, a living reminder of the landscape that once brought wealth to ancient Thysdrus.
Within that same landscape, the amphitheatre remains immense and unmistakable, rising above the modern town much as it must have done at the height of the city’s prosperity.
It is the enduring monument of a vanished city, a final expression of its wealth, ambition, and place within the Roman world.
Thysdrus faded into history. Its colossus still rises above the silence.