Vienna is the capital and most populous city of Austria. It serves as the country's primate city and functions as its primary cultural, economic, and political center. The city is located on the river Danube and is the most populous city along that waterway.
With a population of just over two million inhabitants, Vienna represents a significant portion of the Austrian population; its larger metropolitan area holds nearly 2.9 million people, accounting for almost one-third of the nation's total population. It ranks as the fifth-largest city by population within the European Union.