(CNN) - President Abraham Lincoln signed the Yosemite Grant Act to preserve Yosemite Valley and the Mariposa Grove of giant sequoias 150 years ago Monday.
The grant marked the first California state park.
In 1890, the land surrounding these two tracts was designated Yosemite National Park.
Yosemite National Park covers over 700,000 acres.
It hosts over 3 million visitors annually.
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