http://www.pbs.org/nationalparks
PBS brings you a preview of the newest Ken Burns documentary series, THE NATIONAL PARKS: AMERICAS BEST IDEA. The 12-hour, six-part documentary series, directed by Burns and co-produced with his longtime colleague, Dayton Duncan, who also wrote the script, is the story of an idea as uniquely American as the Declaration of Independence and just as radical: that the most special places in the nation should be preserved, not for royalty or the rich, but for everyone.
People from all around the world come to visit these places and they are truly some of the most spectacular views you can ever see.

It is a very long documentary 12hours, so you can find it on Youtube or other sources.

http://www.pbs.org/nationalparks

http://www.shoppbs.org/entry.point?entry=3473255&source=PBSCS_YOUTUBE_NAPB600_KBNATPARKS:N:DGR:N:N:609:QPBS
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Did you know there are almost 400 parks in the national park system?

The National Parks: America's Best Idea is a six-episode series directed by Ken Burns and written and co-produced by Dayton Duncan.
Filmed over the course of more than six years at some of nature's most spectacular locales – from Acadia to Yosemite, Yellowstone to the Grand Canyon, the Everglades of Florida to the Gates of the Arctic in Alaska - The National Parks: America's Best Idea is nonetheless a story of people: people from every conceivable background – rich and poor; famous and unknown; soldiers and scientists; natives and newcomers; idealists, artists and entrepreneurs; people who were willing to devote themselves to saving some precious portion of the land they loved, and in doing so reminded their fellow citizens of the full meaning of democracy.