Title: Outline of Vienna
Content: Vienna is: ; a city ; capital of Austria ; a primate city of Austria ; a federated state ; a state of Austria ; Population of Vienna: 1,867,960 ; Area of Vienna: 414.65 km2 (160.10 sq mi) ; Atlas of Vienna Geography of Vienna
Title: Metropolis
Content:  Vienna is the capital city of Austria, an old imperial city, and the seat of many international organisations, including OPEC, as well as hosting a main office of the United Nations. Together with its cultural acumen and history, these features make Vienna the only metropolis in Austria.
Title: Outline of Vienna
Content:  The following outline is provided as an overview of and topical guide to Vienna: Vienna &ndash; capital of Austria and one of its nine states. It is the country's largest city, with over 1.8 million residents within an area of 414.65 km2 (160.10 sq mi). Vienna has a rich heritage and is considered one of the most livable cities in the world. It is the cultural center of Austria and a popular tourist destination, attracting over 6.8 million visitors per year. Having become the home of many musical luminaries throughout music's classical period (and later), including Mozart and Beethoven, Vienna is known as the City of Music.
Title: Vienna
Content:  is often used as a case study by urban planners. Between 2005 and 2010, Vienna was the world's number-one destination for international congresses and conventions. It attracts over 6.8 million tourists a year. Vienna ( Wien ; Wean ) is the national capital, largest city, and one of nine states of Austria. Vienna is Austria's most populous city, with about 2 million inhabitants (2.6 million within the metropolitan area, nearly one third of the country's population), and its cultural, economic, and political centre. It is the 6th-largest city by population within city limits in the European Union. Until the 
Title: Vienna
Content:   In 1804, during the Napoleonic Wars, Vienna became the capital of the newly formed Austrian Empire. The city continued to play a major role in European and world politics, including hosting the Congress of Vienna in 1814/15. The City also saw major uprisings against Hapsburg rule in 1848, which were surpressed. After the Austro-Hungarian Compromise of 1867, Vienna remained the capital of what became the Austro-Hungarian Empire. The city functioned as a center of classical music, for which the title of the First Viennese School (Haydn/Mozart/Beethoven) is sometimes applied.  During the latter half of the 19th century, Vienna developed what had previously been the bastions and 
Title: History of Vienna
Content:  The history of Vienna has been long and varied, beginning when the Roman Empire created a military camp in the area now covered by Vienna's city centre. From that humble beginning, Vienna grew from the Roman settlement known as Vindobona to be an important trading site in the 11th century. It became the capital of the Babenberg dynasty and subsequently of the Austrian Habsburgs, under whom it became one of Europe's cultural hubs. During the 19th century as the capital of the Austrian Empire and later Austria-Hungary, it temporarily became one of Europe's biggest cities. Since the end of World War I, Vienna has been the capital of the Republic of Austria.
Title: Vienna
Content:  of the 20th century, Vienna was the largest German-speaking city in the world, and before the splitting of the Austro-Hungarian Empire in World War I, the city had 2 million inhabitants. Today, it is the second-largest German-speaking city after Berlin. Vienna is host to many major international organizations, including the United Nations, OPEC and the OSCE. The city is located in the eastern part of Austria and is close to the borders of the Czech Republic, Slovakia and Hungary. These regions work together in a European Centrope border region. Along with nearby Bratislava, Vienna forms a metropolitan region with 
Title: Wien (river)
Content:  The Wien is a river that flows through Austria's capital Vienna.
Title: Music of Vienna
Content:  Vienna is the capital and largest city of Austria, and has long been one of the major centers for cultural development in central Europe. Music organizations in Vienna include the Gesellschaft der Musikfreunde, which has been promoting musical development in the city since 1812. The Vienna Boys Choir has an even longer history, dating back to 1498, while the Vienna Philharmonic Orchestra is also renowned. Major music venues in Vienna include the State Opera House, the People's Opera House, the Burgtheater, and the Theater an der Wien, the former three of which are owned by the federal government.
Title: Vienna
Content:  into the Ringstraße, a new boulevard surrounding the historical town and a major prestige project. Former suburbs were incorporated, and the city of Vienna grew dramatically. In 1918, after World War I, Vienna became capital of the Republic of German-Austria, and then in 1919 of the First Republic of Austria. From the late-19th century to 1938, the city remained a center of high culture and of modernism. A world capital of music, Vienna played host to composers such as Brahms, Bruckner, Mahler and Richard Strauss. The city's cultural contributions in the first half of the 20th century included, among many, the Vienna Secession movement in 

Question: What is Vienna the capital of?
Answer: Holy Roman Empire.
Holy Roman Empire of the German Nation.
First Reich.
Reich.
Austrian Empire.
Austria.
Habsburg Monarchy.
Habsburg Empire.
Austria-Hungary.
Austro-Hungarian Empire.
Dual Monarchy.
Austria Hungary.
Austria.
Österreich.
Republic of Austria.
Republik Österreich.
AT.
at.
AUT.
🇦🇹.
aut.
Lower Austria.
Niederösterreich.