Hoover Dam; Top 100 wonders of the World
May 22nd 2012 Hoover Dam is one of the top 100 Wonders of the World. Located between Arizona and Nevada, it is a straddle for the Colorado River, a concrete arch-gravity dam in the Black Canyon of the River. An engineering and architectural wonder it was the world's largest dam in 1930 when it was constructed. It is a Historic landmark and one of the most visited structures in the United States.
After th
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