With a population of around 50,000 , Carnuntum was a major metropolis of the Roman Empire in ancient times—even larger and more significant than neighboring Vindobona, today’s Vienna. The once-vibrant city was considered a center of political power, trade, and cultural diversity. Today, the archaeological remains between Petronell-Carnuntum and Bad Deutsch-Altenburg in Lower Austria serve as a reminder of this glorious past. As part of the Danube Limes World Heritage Site —the former Roman military frontier along the Danube—Carnuntum preserves an important piece of Roman history.
From a cosmopolitan city to a World Heritage Site
What once began as a Roman winter encampment developed between the 1st and 4th centuries AD into a true metropolis. As the capital of the province of Pannonia Superior , Carnuntum was home to around 50,000 people—more than in neighboring Vindobona, today’s Vienna. Thanks to its location on the Danube and along important trade routes, the city became a major center of commerce and power within the Roman Empire. Emperor Marcus Aurelius stayed here and wrote parts of his famous *Meditations*. Furthermore, emperors were proclaimed in Carnuntum, and landmark decisions for the Roman Empire were made there. After the city’s decline, Carnuntum fell into obscurity for a long time until excavations began in the late 19th century.
UNESCO World Heritage Site Danube Limes
Nearly 2,000 years ago, the fortified northern border of the Roman Empire ran through Carnuntum. Today, the site is part of the UNESCO World Heritage Site “Borders of the Roman Empire – Danube Limes, ” which stretches along the Danube from Germany through Austria to Slovakia. Located just about 40 kilometers east of Vienna, Carnuntum is now one of the most fascinating archaeological destinations in Central Europe. Between the municipalities of Petronell-Carnuntum and Bad Deutsch-Altenburg, the history of the Danube Limes comes to life in a truly impressive way.

Carnuntum, one of the most significant archaeological destinations
Carnuntum is anything but an ordinary archaeological site. Instead of just looking at old foundation walls, here you can experience a fully reconstructed Roman neighborhood on its original site —a concept that is unique worldwide. Residential buildings, a magnificent city villa, shops, and even a Roman bathhouse have been rebuilt using ancient craftsmanship techniques. What makes it special: The buildings are fully furnished, the underfloor heating works, and even the kitchens would be ready for immediate use. As you stroll through the streets, you almost get the feeling that the Romans have just stepped around the corner.
The site also features many other highlights. The impressive Heidentor is the landmark of Carnuntum and the last surviving part of a massive triumphal arch. Two amphitheaters demonstrate just how large the city once was—one of them could seat around 13,000 spectators. A visit to the Museum Carnuntinum is also well worth it: In Austria’s largest Roman museum, you can marvel at numerous original artifacts such as coins, statues, weapons, and everyday objects, and gain an even deeper insight into the daily life of the Romans.
A Journey into Antiquity
The Roman city of Carnuntum is celebrating its 30th anniversary this year and is open daily from 9:00 a.m. to 5:00 p.m. from mid-March to mid-November . From Vienna, you can reach the site inabout 40 to 45 minutes via the A4 and B9. Alternatively, the S7 S-Bahn takes you directly to Petronell-Carnuntum —from there, it’s only about a 10- to 15-minute walk to the archaeological park.
If you ’re fascinated by the world of antiquity , you can also discover exciting experiences and places right here in Vienna. In addition to the world-famous collections of the Kunsthistorisches Museum (KHM) , a very special highlight currently awaits you: At the Immersive Center Donauturm, a spectacular virtual reality expedition takes you on a journey to Ancient Egypt. For a moment, leave modern Vienna behind and explore the world of the pharaohs — immersively, interactively, and up close.