What title was granted to Yosemite National Park in 1984?
In 1984, Yosemite National Park was awarded the designation of UNESCO World Heritage Site. The park was chosen for many criteria, including its natural beauty, its waterfalls, sequoia groves, and its glacial history.Over the years, several other U.S. national parks have been recognized by UNESCO, including Grand Canyon, Carlsbad Caverns, and Mammoth Cave.
Source: UNESCO