Karlsruhe, Germany: Two ferris wheels erected in the memory of Karl Drais, who was born in the city on 29 April 1785 and invented the running machine, a predecessor to the bicycle. Photo: Uli Deck/AP.
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Karlsruhe, Germany: Two ferris wheels erected in the memory of Karl Drais, who was born in the city on 29 April 1785 and invented the running machine, a predecessor to the bicycle. Photo: Uli Deck/AP.
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