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Throughout America, there are many national monuments, many devoted to presidents such as the monuments honoring washington, and abraham lincoln.
But the very first national monument was not man made, its nature made, so grand and beautyfull, and it was recognized as a national monument by the president `Theodore Roosevelt` in 1906.
Image belongs to: National Park Services; U.S department of the interior.
Source link: http://www.nps.gov/deto/index.htm