From our friends @History: Yosemite National Park was established in 1890. John Muir discovered that the vast meadows surrounding Yosemite Valley, which lacked government protection, were being overrun and destroyed by domestic sheep grazing in 1889. Muir and Robert Underwood Johnson, a fellow environmentalist and influential magazine editor, lobbied for national park status for the large wilderness area around Yosemite Valley. A year later Congress set aside over 1,500 square miles of land (about the size of Rhode Island) for what would become Yosemite National Park, America’s third national park. Today, over 3 million people get back to nature annually at Yosemite and check out such stunning landmarks as the 2,425-foot-high Yosemite Falls, one of the world’s tallest waterfalls; rock formations Half Dome and El Capitan, the largest granite monolith in the U.S.; and the three groves of giant sequoias, the world’s biggest trees.