Arnsberg is a hidden gem in the German Ruhr Valley. Once an important center of the steel and coal industries, the city has reinvented itself in the last few decades and is now a popular destination for outdoor enthusiasts. Situated in the Sauerland region, Arnsberg is surrounded by forests and mountains and is a great place for hiking, biking, and skiing. The old town is charming and well-preserved, and there are plenty of restaurants and bars serving local specialties like venison and black pudding. Arnsberg is also home to the Hagen Museum of Art, one of the largest and most important art museums in Germany.