Photo Gallery: U.S. Landmarks and National Parks The United States is a vast land full of stunning scenery. Check out some of the nation's choicest spots in this gallery.

Classic National Geographic Photos: Yosemite Witness the evolution of grand Yosemite beginning with John Muir's founding crusades. From Teddy Roosevelt to '70s rock climbers, a lively look at Yosemite's past.

America's Ultimate Parks 2009: Yosemite Adventure magazine presents their picks for the nine best parks in the country. Get tips on what to do and where to stay, and see why Yosemite made the list.

Yosemite National Park Quiz How much do you know about Yosemite? Take this quiz and find out!