Posted in Web Yosemite National Park | Location, History, Climate, & Facts – Britannica June 8, 2025 Yosemite National Park, scenic mountain region in east-central California, U.S. The park, which encompasses 1,189 square miles (3,080 square km), was designated a UNESCO World Heritage site in 1984. https://www.britannica.com/place/Yosemite-National-Park