City in North Rhine-Westphalia, Germany
Aachen is the 13th-largest city in North Rhine-Westphalia and the 27th-largest city of Germany, with around 261,000 inhabitants.Wikipedia
North Rhine-Westphalia or North-Rhine/Westphalia, commonly shortened to NRW, is a state in Western Germany. With more than 18 million inhabitants, it is the most populous state in Germany. Apart from the city-states, it is also the most densely populated state in Germany. Covering an area of 34,084 km2 (13,160 sq mi), it is the fourth-largest German state by size.Wikipedia
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