The 2.2 km of preserved town wall illustrates the defensive strength and importance of the former free imperial town. Mühlhausen thus has an almost completely preserved defensive system. It can be explored over a length of 370 meters. Some of the numerous defensive towers and roundels were later converted into pavilions. They house themed rooms on the historical use of the complex as well as on danger prevention in the urban environment. The viewing platform of the Rabenturm (34.2 m) offers a panoramic view of Mühlhausen and the surrounding area.