This PBS site introduces readers to Ken Burns's six-part documentary, The National Parks: America's Best Idea. Readers may like to begin with the excellent History tab, which includes a colorful interactive timeline, beautiful archival photographs, and articles tracing the history of the national parks from 1851 onward. In addition, the Watch Video tab features over a dozen film clips from the documentary, including stories of John Muir and Teddy Roosevelt, an explanation of how Yosemite got its name, and a 6-minute treatment of Mark Twain's relationship to the Hawaii Volcanoes National Park. Finally, the For Educators tab includes about a dozen freely downloadable lesson plans, covering such topics as People Behind the Parks and Personal Stories of the National Parks.