Gelsenkirchen is a city located in the Ruhr area of North Rhine-Westphalia, Germany. It is known for its industrial history and is part of the larger Ruhr region, which was once a major coal and steel production area. Today, Gelsenkirchen is a vibrant city with a mix of modern and historic architecture. The city is home to a number of cultural attractions, including the Musiktheater im Revier, a renowned opera house, and the ZOOM Erlebniswelt, a large zoo and aquarium complex. Gelsenkirchen also has several parks and green spaces, providing residents and visitors with opportunities for outdoor recreation.