List of World Heritage Sites in the United States

Yellowstone Mesa Verde Grand Canyon Everglades Independence Hall Redwood San Antonio Missions Mammoth Cave Olympic Cahokia Smoky Mountains Statue of Liberty Yosemite Chaco Monticello UVA Taos Pueblo Carlsbad Caverns Waterton-Glacier Poverty Point Unity Robie Taliesin Hollyhock Fallingwater Jacobs I Taliesin W. Guggenheim Hopewell class=notpageimage| There are 25 World Heritage Sites in the United States; 21 are single location sites, and 4 are multi-part sites encompassing several locations (the Frank Lloyd Wright buildings, the only site with widely spaced properties, are in blue).
Hawaiʻi Volcanoes Papahānaumokuākea class=notpageimage| Locations of World Heritage Sites in Hawaii	Wrangell–St. Elias Glacier Bay class=notpageimage| Locations of World Heritage Sites in Alaska	La Fortaleza San Juan NHS class=notpageimage| Locations of World Heritage Sites in Puerto Rico

The United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Sites are places of importance to cultural or natural heritage as described in the UNESCO World Heritage Convention, established in 1972.^[1] Cultural heritage consists of monuments (such as architectural works, monumental sculptures, or inscriptions), groups of buildings, and sites (including archaeological sites). Natural features (consisting of physical and biological formations), geological and physiographical formations (including habitats of threatened species of animals and plants), and natural sites which are important from the point of view of science, conservation, or natural beauty, are defined as natural heritage.^[2] The United States accepted the convention on December 7, 1973.^[3] There are 25 World Heritage Sites in the United States, with a further 18 on the tentative list.^[3]

The first sites in the United States added to the list were Mesa Verde National Park and Yellowstone National Park, both at the second session of the World Heritage Committee, held in Washington, D.C., in 1978.^[4] The most recent site listed is the Hopewell Ceremonial Earthworks in 2023.^[3] The 25 sites are located in 22 states and two territories. Arizona, California, Hawaii, Illinois, Montana, New Mexico, New York, and Pennsylvania each contain multiple sites (with the Frank Lloyd Wright site spread across six states), while two sites are transboundary sites shared with Canada.^[3] Of the 25 sites, 12 are cultural, 12 are natural, and one, Papahānaumokuākea, is mixed, listed for both cultural and natural properties.^[3] One site is currently listed as endangered: Everglades National Park was listed in 2010 due to deterioration of its aquatic ecosystems. The site had also been listed as endangered between 1993 and 2007. Yellowstone National Park was listed as endangered between 1995 and 2003 because of planned mining operations.^[5] The United States has served as a member of the World Heritage Committee five times, 1976–1983, 1987–1993, 1993–1999, 1999–2001, and 2005–2009.^[3]