The Eravasci were a Celtic people who inhabited Transdanubia, including Gellért Hill, Dunaújváros, and Aquincum. Most of what we know about them comes from archaeology and Roman literature. The Roman ruins of Aquincum stand today and are a museum.
Very little is known about them. However, we do know that they were highly cultured. They moved in from the north in about the third or fourth centuries BC. The Eravasci worked with iron, created jewelry and pottery, and even minted their own coins out of silver. Most Celtic societies at this time were barter economies, therefore making the Eravasci distinguishable among other tribes. Despite being immensely cultured, they were quite powerless and minor in the ancient world. They founded Aquincum; this became a major Roman military base and civilian city.
The Romans conquered and annexed the Eravasci around 12 BC. There, they turned the existing settlement into Aquincum and made it a military and civilian hub. The territory of the Eravasci became the Roman providence of Pannonia Inferior with Aquincum as its capital. The Eravascian culture continued to thrive throughout the early Roman occupation. Evidence of this is found on tombstone reliefs, which pictures Celtic dress and jewelry. Aquincum eventually stationed one legion of 6,000 men and 500 cavalry by 89 AD as part of the Roman border protection system. The town prospered in the 2nd and 3rd centuries AD. In 106 AD, Aquincum was given full Roman privileges. This gave them indoor heating, public baths, mosaics (which are on display in the museum), and two Amphitheaters (which are also on display). The amphitheaters staged military and civil displays. At the end of the 2nd century AD, Aquincum had 30,000 residents or more.