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Eiffel Tower's 125th anniversary [Pictures]

In March 1889 the Eiffel Tower officially open in Paris, just in time for the World's Fair. More than 250 workers completed the structure, which included 18,038 wrought-iron sections that weighed three tons and were bolted together with 2.5 million rivets. Designed by Gustave Eiffel, the 1,000-foot tall landmark was not an immediate hit, with many at the time questioning its aesthetic value. Today, it is an iconic Parisian monument that defines the city's landscape.