The Hagberg Tower (Hagbergturm) is a 23-metre-high observation tower on the Hagberg that is constructed of wood on a reinforced concrete pedestal. It is crowned by two pagoda-like structures and is visible for miles around. A first tower was erected on the hill in 1901, but even before the First World War it had been replaced by the tower in its present form. In 1936 it was acquired by the Schwäbischer Albverein, which still maintains it today. During the Second World War the Luftwaffe established an observation post in the tower. At that time the upper pagoda was removed. In 1949 the tower was renovated, in 1973 it had to be closed, however, due to its state of disrepair. In 1979/80 it was rebuilt in its original shape and opened again on 21 June 1980.