National Parks Week begins Saturday, when all 397 parks around the U.S. offer free admission and special programs to lure visitors.
To get you warmed up, we've combed the web to compile the most viral of U.S. National Park videos, the perfect inspiration for the week-long celebration that's co-sponsored by the National Park Foundation, a non-profit that works to preserve and promote the parks.
From Yosemite to Death Valley to the National Park Service-administered memorials in DC, here's a timely look at some of America's favorites.
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