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The National Park Service is turning 100 years old in August. To celebrate, the National Park Service is teaming up with the National Park Foundation for National Park Week.
From April 16 through April 24, admission to all national parks across the country is free.
There's no better time to visit everything from the Great Smoky Mountains National park on the border of Tennessee and North Carolina, to Yosemite in California.
To ring in National Park Week, we've selected 10 photos showcasing the beauty of America's national parks:
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Acadia National Park
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Glacier National Park
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Grand Canyon National Park
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