10 must-see National Parks
Looking to get away this summer? Check out a National Park.
Lifestyle
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Yellowstone National Park
Old Faithful and the majority of the world's geysers are preserved here. They are the main reason the park was established in 1872 as America's first national park - an idea that spread worldwide.
In this photo, tourists photograph Old Faithful erupting on schedule late in the afternoon in Yellowstone National Park, Mont.
Credit: AP Photo/Julie Jacobson
Related: Yellowstone National Park Website
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