Hornisgrinde-Aussichtsturm und Bismarckturm
Hornisgrinde (elev. 1164 m) is the highest mountain in the northern Black Forest. The Hornisgrindeturm, completed in 1910, was closed to the public for nearly 60 years due to its occupation by the German Luftwaffe and later by the French military. In 2005, following extensive renovations, it was re-opened to the public as an observation tower. Open daily during school holidays; otherwise on Saturdays, Sundays and public holidays from 1 November to 30 April 11am–4pm, from 1 May to 31 October 10:30am-5pm (subject to nice weather and good visibility).
The Bismarckturm dates back to the time of German Chancellor Otto von Bismarck -- hence its name. The tower was not accessible for a long period of time. During the 1990s, it was renovated and re-opened to the public. The entrance now is no longer through the old staircase inside the tower, but through the newly mounted outside staircase. Four panoramic panels on the platform inform visitors of the mountains and valleys that can be seen from there. Entrance to the Bismarckturm is free of charge.