The Roman amphitheatre in Croatia that ranks among the largest surviving Roman amphitheatres is the Pula Arena.
Located in Pula on the Istrian peninsula, the amphitheatre was built in stages between 27 BCE and 68 CE. Construction began during the reign of Augustus, while later expansion under Claudius and Vespasian produced the monumental stone structure visible today. It hosted gladiatorial combats, animal hunts, and other public spectacles.
The Pula Arena is especially notable because it retains its complete outer circular wall, making it the only surviving Roman amphitheatre with that feature. Its elliptical exterior measures about 132.5 by 105.1 metres and reaches roughly 32.45 metres in height. Ancient estimates suggest that it could accommodate up to 23,000 spectators.
The Colosseum is much larger and more famous, but it is not the only major Roman arena. Verona Arena and the Arena of Nîmes are also substantial survivors. Unlike many ancient monuments, Pula’s amphitheatre remains an active venue, hosting concerts, film events, and performances in modern Croatia.