38 BCE. However, people had lived in the area of today's city much earlier. Evidence of this includes the 14,000-year-old double burial at Oberkassel as well as a trench and wooden palisades found on the Venusberg, dating back to around 4080 BCE.

In the years before the birth of Christ, Roman presence in Bonna was modest, but this changed after the Roman defeat in the Battle of the Teutoburg Forest