Pelzerturm, Former observation tower in Aachen Forest, Germany

Pelzerturm was an observation tower in Aachen Forest standing 42 meters tall with a viewing platform at 27 meters high. The structure had a rectangular base built from quarry stone and featured a double staircase inside.

A first wooden tower was built in 1886 on the Steineknipp hill at the suggestion of head forester Franz Oster. After an architecture competition in 1895, won by Hermann Jansen with his "Tornado" project, the city building office erected a quarry-stone replacement from 1898, inaugurated on 14 July 1899. US Army troops blew up the tower in 1944; scattered stone rubble still marks the site.

The tower was named on 30 March 1915 after Ludwig Pelzer, Aachen's former lord mayor, who had died on 1 March 1915. The name was given while the stone tower still stood; today only scattered stone rubble marks the spot on the Steineknipp, so visitors read the name against the remains rather than the building.

The tower site sits in Aachen Forest at about 358 meters elevation and is marked today only by scattered stone remains on the ground. It is reachable via Merlepützweg and offers convenient access for forest walkers.

A branch of a meteorological observatory with an English weather station operated at the tower's base until 1945. This facility tracked the region's climate and contributed to early weather forecasting efforts.