Yosemite National Park, in California, is home to some of the most awe-inspiring scenery in the United States. Waterfalls cascading from towering peaks, shear rock faces, ancient forests and majestic valleys draw people from around the world. Waterfalls are best seen in the spring and early summer, but landmarks like Half Dome and El Capitan are beautiful any time of the year. These cams will make it possible to enjoy the spectacular scenery from your computer.