Humberg Tower, Observation tower on Humberg hill at Kaiserslautern, Germany.

Humberg Tower is a 35.8-metre sandstone observation tower on the Grosser Humberg hill south of Kaiserslautern. Its viewing platform stands 28.2 metres above ground, reached by 130 spiral steps inside plus 33 steps on the outside base stair. The tower was built from stone quarried on the hilltop.

In 1896 citizens of Kaiserslautern founded the Humberg Association to finance a lookout tower on the hill; founding members included sewing-machine manufacturer Georg Pfaff, mayor Theodor Orth, the merchants Pfeiffer and Karcher and malt producer Gelbert. Building to plans by architect Ludwig von Stempel began in spring 1899, using sandstone quarried on the Humberg plateau. The tower collapsed that same year and was inaugurated on 2 September 1900. In 1909 the association dissolved and the tower passed to the city.

The tower is run by the Humbergturm-Verein, founded in 2001 to maintain it as a hiking destination. The Wanderlaus trail passes the tower, and the hill had already been a favourite viewpoint for Kaiserslautern citizens before construction. The founding association of 1896 included sewing machine manufacturer Georg Pfaff and mayor Theodor Orth.

Start your visit from Bremerhof, where you will find parking and a restaurant with outdoor seating. The marked hiking paths make the walk to the tower straightforward and enjoyable for most visitors.

The tower collapsed during construction in 1899, the same year building began, and was rebuilt in time for its ceremonial opening on 2 September 1900. Its sandstone came from the rocky plateau of the Humberg itself.