Belgrade is the capital and largest city of Serbia. The city lies at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. With a population of 1,630,000(official estimate 2007), Belgrade is the third largest city in Southeastern Europe, after Istanbul and Athens. Its name in Serbian translates to White city. Belgrade's wider city area was the birthplace of the largest prehistoric culture of Europe, the Vina culture, as early as the 6th millennium BC. In antiquity, the area of Belgrade was inhabited by the Thraco-Dacian tribe of Singi who would give the name to the city after a fortress was founded in the 3rd century BC by the Celts, who named it Singidun (dun, fortress) It was awarded city rights by the Romans before it was permanently settled by Serbs from the 7th century onwards. As a strategic location, the city was battled over in 115 wars and razed to the ground 44 times since the ancient.