Hasenbergturm Stuttgart, Former observation tower site in Stuttgart, Germany

The Hasenbergturm was an observation tower in Stuttgart that rose from reddish sandstone to a height of about 36 meters (118 feet). The structure had a diameter of about 5.70 meters (18.7 feet) and was built from stone quarried locally in Gerlingen.

The tower was built in 1879 by the Stuttgart Beautification Association and served the city as a landmark for decades. During World War II, it was destroyed in 1943 to prevent enemy pilots from using it as a navigation point.

The hill name Hasenberg, "hare hill", predates the tower and survives in the park laid out in 1973 around the tower stump. There the city placed an 1882 monument to the Swabian poet Wilhelm Hauff beside large sculptures by Otto Herbert Hajek, so a war memorial site now mixes nineteenth-century literary commemoration with post-war abstract art.

The tower stump stands in the redesigned Hasenberganlage, laid out in 1973, on the Hasenberg hill; the Wilhelm Hauff monument of 1882 and large sculptures by Otto Herbert Hajek are in the same green space. The site is reached on foot, and the stump marks where the 184 steps once began.

The city still pays the Beautification Association a small perpetual compensation for the lost admission fees, a duty arising from the 1943 demolition. The tower stump also stands beside an 1882 monument to the poet Wilhelm Hauff and large sculptures by Otto Herbert Hajek, placed when the Hasenberg grounds were redesigned in 1973.