Hochheideturm, Observation tower in Willingen, Germany

Hochheideturm is a 59-metre reinforced-concrete observation tower with an octagonal cross-section on the Ettelsberg near Willingen. Its fully glazed viewing platform, 12 metres across, sits at 44 metres on the tower, at 875 metres above sea level. A lift for eight people or 241 steps leads up, and a 42-metre climbing wall covers the northwest side.

The tower was designed by the architectural firm Karl Suck of Korbach as a reinforced concrete structure with an octagonal cross-section. Construction began in November 2001 after the permit was granted on 16 October 2001, and the foundation was completed on 31 January 2002. It opened to the public on 28 September 2002, with the official inauguration on 18 October 2002; the building cost 2 million euros and belongs to Ettelsberg-Seilbahn GmbH & Co. KG.

The tower takes its name from the Niedersfelder Hochheide, a heathland about 2 km to the southwest. Its glassed platform at 875 m is the highest accessible viewpoint in northwest Germany, and on clear days the view reaches the Teutoburger Wald, Harz and Rhön.

The glassed platform sits 44 metres up the tower, at 875 metres above sea level, reached by lift for eight people or by 241 steps. The tower stands about 150 metres east-northeast of the Ettelsberg summit, above the Ettelsberg gondola and next to a reservoir used for artificial snowmaking.

The climbing wall on the northwest side is 42 metres high, making it one of Europe's tallest artificial climbing walls. It is mounted directly on the tower's concrete facade, so climbers ascend the same structure that carries the observation platform.