thumb|The Trudelturm in Aerodynamic Park, Berlin The Trudelturm (English: "spin tower") is an approximately 20-meter-high former specialist wind tunnel in the Adlershof district of Berlin, Germany.
thumb|The Trudelturm in Aerodynamic Park, Berlin The Trudelturm (English: "spin tower") is an approximately 20-meter-high former specialist wind tunnel in the Adlershof district of Berlin, Germany.
The building, also known as the "Trudelwindkanal" ("spin wind tunnel"), was built by the German Aviation Research Institute (Deutsche Versuchsanstalt für Luftfahrt, DVL) between 1934 and 1936 at the former Berlin-Johannisthal airfield. It stands next to the approximately 130-meter-long ("big wind tunnel") from the same period. Both are listed on the Berlin State Monuments List as part of the former DVL site.
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