Answer
Großkreutz was born in Dortmund, which is a city in North Rhine-Westphalia. The city is located in the Ruhr Valley, which is a major industrial region in Germany. Dortmund is the largest city in North Rhine-Westphalia and the eighth-largest city in Germany. It is a major center of industry, commerce, and transportation. Dortmund is also home to a number of universities and research institutions.