Demographic history of Belgrade
This article is about demographic history of Belgrade, the capital and largest city of Serbia. == Ancient period == Belgrade, known as Celtic Singidunum, was founded in the 3rd century B.C., near the site of a prehistoric settlement of Vinča (Vinča culture), which ranks the city among the oldest ones in Europe and the world.
Source: Wikipedia — Demographic history of Belgrade (CC BY-SA 4.0)