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Extreme climber Alain Robert in Frankfurt

Alain Robert climbs the Skyper skyscraper, in Frankfurt, Germany. Photo by Boris Roessler/picture alliance via Getty Images

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28 September 2019, Hessen, Frankfurt/Main: The extreme climber Alain Robert climbs unsecured up the Skyper skyscraper facade. In the past, the Frenchman had caused a sensation worldwide several times with spectacular climbing actions. He then climbed down the 153 metre high façade again. Photo: Boris Roessler/dpa (Photo by Boris Roessler/picture alliance via Getty Images)