Discover 100 of America's most captivating natural and historic treasures, all incredible sites entrusted to the National Park Service.
Read moreFilmmaker Ken Burns on national parks and presidents
As the National Park Service turns 100, renowned filmmaker Ken Burns talks about the presidents and the parks they protected.
Read moreNational Parks: The roots of 'America's best idea'
Often called "America's best idea," creation of the world's first national park at Yellowstone wasn't intended to be a radical new idea by a young nation.
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