The document provides information about several cities in Austria and Central Europe:
Vienna is the capital and largest city of Austria, located on the Danube River. It has over 1.7 million inhabitants and is a cultural, political, and economic center of the country. The city has a long history and is one of the oldest capitals in Europe with important artistic and musical heritage.
Linz is the capital of Upper Austria, located on the Danube River with around 188,000 inhabitants. Founded by the Romans, it has historically served as a provincial capital and trade route crossing. Johannes Kepler spent time there.
Salzburg is the capital of the state of Salzburg, known as the