From 1939 (start of construction) to 1945 (demolition by the German Wehrmacht) there was one of Hitler's Führer Headquarters here, the Tannenberg, which he used briefly in 1940. From July to the end of 1941 Gestapo prisoners from the forced labour camp (AEL) of Kniebis-Ruhestein built a section of the Black Forest High Road on the Kniebis. Both sites belong to the municipality of Baiersbronn, which extends from the new boundaries of the borough of Freudenstadt only on a part of the areas in the south, on which there are residential house and the Alexanderschanze.