The Ruhr is a region in western Germany, located in the state of North Rhine-Westphalia. It is known for its industrial heritage and is home to many large cities, such as Dortmund and Essen. BADEN is a region in southwestern Germany, located in the state of BADEN-Württemberg. It is known for its picturesque landscapes and is home to many spa towns, such as BADEN-Baden and Heidelberg. Saar is a region in western Germany, located in the state of Saarland. It is known for its steel industry and is home to many large cities, such as Saarbrücken and Völklingen. Hesse is a region in central Germany, located in the state of Hesse. It is known for its forests and is home to many large cities, such as Frankfurt and Kassel. Saarland is a state in western Germany, located on the border with France. It is known for its coal mining industry and is home to many large cities, such as Saarbrücken and Neunkirchen.