The large windtunnel is seen at the Aerodynamic Park on the campus of Humboldt University in Berlin-Adlershof in Berlin, Germany, 13 October 2011. The technical monument was developed in the middle of the 1930s for research purposes of the German Research Insitute for Aviation and is a reminder of the interesting history of this location. Photo: Jens Kalaene

- Image ID: DADD7N

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