Vienna (Wien) is the capital of the Republic of Austria and one of the nine states of Austria. Historically, it was the capital of the Hapsburg dominions and the Empire of Austria-Hungary. Vienna is Austria's primary city, with a population of about 1.7 million, and is by far the largest city in Austria, as well as its cultural, economic, and political center. It is the 10th largest city by population in the European Union. Vienna has long led the world in certain performing arts such as classical opera.