GERMANY HAMBURG 1SEP13 - Police cars in front of a building at the IBA architecture and building exhibition site in Wilhelmsburg, Hamburg.<br /> <br /> With HafenCity and the International Building Exhibition IBA, Hamburg is home to two of the most important urban development areas in Europe.<br /> <br /> <br /> <br /> jre/Photo by Jiri Rezac<br /> <br /> <br /> <br /> © Jiri Rezac 2013
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