Gelsenkirchen is an industrial city in the Ruhr area of western Germany. Once known for its coal mines and steel production, the city has transitioned into a major center for the renewable energy industry. The city is home to the Europe’s largest solar power plant and a large wind farm. Gelsenkirchen is also a major transportation hub, with a busy international airport and a major train station. The city is home to a large Turkish community and has a lively nightlife, with a variety of clubs and bars.