The Tönsberg is a hill ridge in the Teutoburg Forest that reaches a height of 333.4 m above sea level (NN) and lies in the district of Lippe near Oerlinghausen.

In 1898 the writer, Hermann Löns, walked over Tönsberg; his impressions are recorded in his narrative, Frau Einsamkeit ("Lady Loneliness"), which appeared in 1911 in the volume Da draußen vor dem Tore: Heimatliche Naturbilder... Thirty years later a monument to him was erected on the Tönsberg and unveiled on 9 September 1928.

[1] In the Second World War, a British aeroplane crashed in the vicinity of the memorial in February 1945 killing two airmen.

The cylindrical base of the windmill is known as the Kumsttonne ("Sauerkraut barrel") and is an emblem of the town of Oerlinghausen on the north slopes of the Tönsberg.

The Tönsberg appears, in stylised form on the coat of arms for the town of Oerlinghausen; it is the middle one of three hills depicted.