The Roman Zagreb That Never Was

Today, as we walk across Ban Jelačić Square, it is hard to imagine that beneath the tarmac, the tram tracks, and the layers of the medieval and modern city, there once existed a world that never quite became a city – yet was never truly empty. This is the story of a Roman Zagreb that had no forum, no amphitheatre, and no walls, but possessed its own roads, its dead, its coins, its waters, and its people.

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Traces of Life Before 1094

Long before the Diocese of Zagreb was founded in 1094, and before Kaptol and Gradec began their long and turbulent history, this area was well-known to the Romans. Not as an urban centre, but as the edge of the world—a frontier zone between the river, the hills, and the great trade routes.

The archaeological record is clear: a Roman coin from the era of Emperor Diocletian found at Ban Jelačić Square, lost or discarded, yet enough to confirm a presence. There are burials near Zagreb Cathedral that do not fit the medieval context, pointing instead to Late Antiquity or the Early Christian period. Necropolises in the districts of Trnje and Stenjevac sit alongside former roads, just as Roman custom dictated. Pottery, currency, and minor finds scattered across Dubrava, Maksimir, and western Zagreb are not the foundations of a city, but they are the footprints of a life once lived.

In Stenjevac, coins were found belonging to Emperor Trajan Decius, a mid-3rd-century ruler. Decius was no minor figure; he was the first Roman emperor to fall in battle against the barbarians, at a time when the Empire was beginning to fracture. The presence of his coinage in the Zagreb area suggests this was no backwater periphery, but the edge of a stable world—a zone where insecurity was felt, yet life still followed Roman rules.

Roads That Knew the Way; The Sava as Ally and Foe

The Romans viewed everything through the lens of their roads; they were the arteries of the Empire. The Zagreb area sat along vital routes connecting Siscia (Sisak) and Poetovio (Ptuj), linking Pannonia to the Alpine world. Traces of these thoroughfares can still be identified on the city’s western edge, particularly around Črnomerec, where natural passes over the Medvednica mountain dictated the direction of travel.

The River Sava was the key to everything. For the Romans, it was a transport corridor, a source of trade, and a link to the great cities of Pannonia. Conversely, the Sava was unpredictable, prone to flooding, and dangerous for permanent construction.

The river made this area important, but it was also the reason a Roman city never took root here. The Romans were loath to risk monumental architecture where the water might wash away the foundations.

Andautonia – The City That Was Meant to Be

The true Roman city of this region was Andautonia, dating from the 1st to the 4th century AD. Located in present-day Šćitarjevo, some ten kilometres southeast of Zagreb, it had everything a Roman city required: paved streets, a sewage system, public buildings, and baths. As was the case

throughout the Empire, the baths in Andautonia were more than just a place to wash; they were a social hub—a setting for business deals, political discourse, alliances, and leisure.

The Romans never founded a city on the site of modern-day Zagreb due to the marshy, unstable ground, the Sava’s floodplains, and the lack of natural defences in the lowlands. The most sensible location was near Andautonia; the Romans built only where it made practical sense.

Why Is Roman Zagreb So Rarely Mentioned?

The answer is simple. It lacks the “spectacle” of amphitheatres, triumphal arches, forums, or preserved walls. There are only fragments: graves, lost coins, and roads vanished beneath the asphalt. Yet, some of today’s thoroughfares unconsciously follow the logic of Roman engineers. The road remembers longer than the city.

Zagreb identifies more easily with the Middle Ages, as that is where its urban story begins. The Roman period remains quiet, modest, almost awkward—a reminder that the city was not always a city.

Nonetheless, the Roman era in Zagreb is not a void. Romans came here, lived here, passed through, and died here. They simply did not stay long enough to leave monuments in stone.

This is the story of the Roman Zagreb that never existed—but without which, Zagreb would never have been born.