Belgrade

Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers and at the crossroads of the Pannonian Plain and the Balkan Peninsula. According to the 2022 census, the population of Belgrade city proper stands at 1,197,114, its contiguous urban area has 1,298,661 inhabitants, while population of city's administrative area totals 1,682,720 people. It is one of the major cities of Southeast Europe and the third-most populous city on the river Danube.Wikipedia

Central Serbia, also referred to as Serbia proper, is the region of Serbia lying outside the autonomous province of Vojvodina to the north and the disputed Kosovo region to the south. Central Serbia is a term of convenience, not an administrative division of Serbia as such, and does not have any form of separate administration.Wikipedia