Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is by far the largest city in Austria, as well as its cultural, economic, and political centre. It is the 9th-largest city by population in the European Union.
Major tourist attractions include the imperial palaces of the Hofburg and Schönbrunn (also home to the world's oldest zoo, Tiergarten Schönbrunn) and the Riesenrad in the Prater. Cultural highlights include the Burgtheater, the Wiener Staatsoper, the Lipizzaner horses at the spanische Hofreitschule and the Vienna Boys' Choir, as well as excursions to Vienna's Heurigen district Döbling.