<Tr> <Th> Reference </Th> <Td> 308 </Td> </Tr> <Tr> <Th> Inscription </Th> <Td> 1984 (8th Session) </Td> </Tr> <P> Yosemite National Park (/ joʊˈsɛmɪtɪ /, yoh - SEM - i - tee) is an American national park located in the western Sierra Nevada of Central California, bounded on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest . The park, which is managed by the U.S. National Park Service, covers an area of 747,956 acres (1,168.681 sq mi; 302,687 ha; 3,026.87 km) and sits in four counties: centered in Tuolumne and Mariposa, extending north and east to Mono and south to Madera County . Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, giant sequoia groves, lakes, mountains, meadows, glaciers, and biological diversity . Almost 95% of the park is designated wilderness . </P> <P> On average, about 4 million people visit Yosemite each year, and most spend the majority of their time in the 5.9 square miles (15 km) of Yosemite Valley . The park set a visitation record in 2016, surpassing 5 million visitors for the first time in its history . Yosemite was central to the development of the national park idea . First, Galen Clark and others lobbied to protect Yosemite Valley from development, ultimately leading to President Abraham Lincoln's signing the Yosemite Grant in 1864 . Later, John Muir led a successful movement to establish a larger national park encompassing not just the valley, but surrounding mountains and forests as well--paving the way for the U.S. National Park system . </P>

When was yosemite made a world heritage site