Vienna, Austria is the capital, and one of the nine states of Austria, and has a population of approximately 1,631,000 people. It is also the largest city and and a cultural, economic, and political center. Vienna is on the River Danube and is serviced by water traffic and well as railroads and an international airport. Major attractions include several parks, monuments, rivers, and a zoo. In addition, there are theater, music, and art galleries. Other attractions include the Lipizzaner Stallions, and the Vienna Boys' Choir. For those who enjoy good food, there is Wiener schnitzel, and lots of pastry and coffee. Vienna has 14 colleges and universities, including three International universities. There are three autobahns in the city (autobahns are highways with no speed limit).