Ansel Adams will later call O'Sullivan's work "one of the most extraordinary photographs ever made in America." 1875 John K. Hillers becomes the first person to photograph the Grand Canyon. Seasonal ...

In the spring of 1927, photographer Ansel Adams hiked with his friends through the snow at Yosemite National Park in California. The 25-year-old brought along his camera, as he always did, stopping to ...

For more than 150 years, visitors have taken hundreds of millions of photographs of Yosemite National Park. But many of the park’s most iconic images — timeless, internationally famous shots of Half ...