Aachen, also known as Bad Aachen, is a spa and border town in North Rhine-Westphalia, Germany. Aachen was a residence of Charlemagne, and later the coronation place for German kings.
Aachen is the westernmost city of Germany, on its borders with Belgium and the Netherlands, 61 km (38 mi) west-southwest of Cologne in a former coal-mining area. RWTH Aachen University is in the city. Aachen’s industries include science, engineering and information technology. In 2009, Aachen was ranked eighth among cities in Germany for innovation.