Vienna is a city in the Republic of Austria. It is the capital of the country and is considered as the country's primary and largest city. It has the 10th largest population among other cities in the European Union and is considered among the cities with the highest quality of living. It was founded in as early as 500 BC by Celtics. It survived several battles and wars. Throughout the history of the country, this has considered as the capital.

Due to its age, Vienna has a rich culture that includes fine arts, classical music, the opera, theater, and arts. That is why, opera houses, theaters, and museums are among the many attractions of the city. Other attractions include the Tiergarten Schönbrunn (the world's oldest zoo), imperial palaces, and the Secession Building.

Architecture around the city is also very diverse with centuries-old buildings and modern infrastructures. However, it is notable that as highly advanced as the city is, buildings taller than 40 m are very few to preserve the city center which is a UNESCO World Heritage Site. It is also the site of several UN offices and other international organizations and companies.