Bismarck tower, Monument tower in Hattingen, Germany.

The Bismarck tower is an 11-metre observation tower built of Ruhr sandstone on the Schulenberg in southern Hattingen. It was designed by city architect Christoph Epping with a planned height of 16 metres, but one storey was omitted for cost reasons. A hall structure spans the entrance, and stairs lead to the viewing level.

The Hattingen city council decided to build the tower in 1899, prompted by a donation of 1,000 marks from the merchant Robert Hill. The foundation stone was laid on 17 July 1900, and the tower was inaugurated on 1 April 1901, Bismarck's birthday. Designed by city architect Christoph Epping at a planned height of 16 metres, it was built only 11 metres tall for cost reasons, omitting one planned storey.

The tower was inaugurated on 1 April 1901, Bismarck's birthday, and the date has shaped how the site is used: the viewing platform above Hattingen's old town, Winz-Baak and the Ruhr valley is reached by climbing the internal stairs. Since April 2017 the privately funded restoration has kept the tower open to visitors again.

The tower sits on a hilltop that is accessible on foot from the surrounding area, but reaching the viewing level requires climbing stairs. Know that wheelchair access is not available and comfortable shoes are recommended for the ascent.

The tower was planned by city architect Christoph Epping at 16 metres but built only 11 metres high because of costs, so one planned storey was never added. The entrance is spanned by a hall structure, and a steel grille door now secures it.