The Ruhr is a major industrial region in western Germany, known for its rich history in coal mining and steel production. It is home to several large cities, including Dortmund, Essen, and Bochum, which have transformed from industrial hubs to centers of culture and education. The area has a diverse population and offers a mix of urban life and green spaces. In recent years, the Ruhr has focused on revitalization and sustainability, shifting from heavy industry to technology and services. This transformation has led to the development of cultural institutions, such as the Ruhrtriennale arts festival, showcasing the region's commitment to innovation and creativity.