Galéria: A gyalogos hullámvasút, a 21 méter magas, kanyargó lépcsősor Duisburgban
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The sculpture "Tiger and Turtle - Magic Mountain" by Heike Mutter and Ulrich Genth, stands in Duisburg (North Rhine-Westphalia). Photo: 2016, April 04. (Photo by HORST OSSINGER / DPA / dpa Picture-Alliance via AFP)