Wikipedia:WikiProject Germany/Portal:North Rhine-Westphalia/Selected article/4

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The Rhine-Ruhr metropolitan region (German: Metropolregion Rhein-Ruhr) is the largest metropolitan region in Germany with about 11,500,000 inhabitants. It is of polycentric nature and the only megacity in Germany. It covers an area of 7,110 square kilometers and lies entirely within the federal state of North Rhine-Westphalia.

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