Hugenottenturm, Observation tower in Bad Karlshafen, Germany.

The Hugenottenturm is a lookout tower of Weser sandstone on a rocky spur of the Hessischen Klippen, about 165 to 170 metres above sea level on the steep, wooded northeast slope of the Kaiserstein. It was designed by the Bremen architect Eduard Thürmer in the style of 19th-century ruin architecture, and an open spiral staircase of around 100 steps inside the tower leads up to a viewing platform. A separate platform beside the tower can be used for small gatherings.

The tower was built in 1913 by Johann Josef Davin, whose ancestors fled France as religious refugees. It marks the city's gratitude for the French Protestants who founded Bad Karlshafen in 1699.

The tower is named after the Huguenots, the French Protestants invited by Landgrave Karl of Hesse-Kassel, whose refugee city of Karlshafen was founded in 1699. Its donor Johann Josef Davin traced his family to the tanner Guillaume Davin, born around 1674 in Villaret in Piedmont, who reached Hofgeismar in spring 1686. For the 2013 centenary, sculptor Rolf Steiner made a steel-tube Huguenot cross with a gilded dove, fixed to the tower's outer wall.

The tower is accessible during the day when you cross the bridge over the Diemel River from the city center and walk uphill to reach it. The climb offers a pleasant walk with gradually improving views of the surroundings.

The tower's donor, Bremen merchant Johann Josef Davin, descended from a Huguenot family from Villaret in Piedmont; his ancestor Guillaume Davin reached Hofgeismar in spring 1686 with the refugee brigade Valcluson. Davin, born in Königswinter in 1855, funded the tower in honour of his ancestors and handed it to the town on 26 May 1913.