List of World Heritage Sites in the United States

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. The United States of America ratified the convention on December 7, 1972, making its historical sites eligible for inclusion on the list.

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. from September 5–8, 1978. In total, 23 sites have been included, the most recent being the San Antonio Missions in 2015. The twenty-three sites are located in nineteen different states and two territories. California, Hawaii, Montana, and New Mexico each contain multiple sites, while two sites (Waterton-Glacier International Peace Park and Kluane / Wrangell – St. Elias / Glacier Bay / Tatshenshini-Alsek) are transboundary sites shared with Canada.

List of sites

The table lists information about each World Heritage Site:

Name: as listed by the World Heritage Committee

Location: city or location of site

State: one of the 50 U.S. states

Period: time period of significance, such as construction for buildings; purely natural sites do not have a time period

UNESCO data: the site's reference number; the year the site was inscribed on the World Heritage List; the criteria it was listed under: criteria i through vi are cultural, while vii through x are natural; (the column sorts by year added to the list)

Description: brief description of the site

  * Transboundary site

   In danger

Name	Image	Location	State	Period	UNESCO data	Description	Ref(s)
Mesa Verde National Park		Montezuma County	Colorado	6th to 12th centuries	27; 1978; iii	The site contains a number of cliff dwellings constructed by the ancient Pueblo peoples between the 6th and 12th centuries at an altitude greater than 2,600 metres (8,500 ft). Some notable examples amongst the 600 dwellings include Cliff Palace, Balcony House, and Square Tower House. The dwellings were discovered in 1874.
Yellowstone National Park		Park & Teton counties, Wyoming; Gallatin & Park counties, Montana; Fremont County, Idaho	Wyoming, Montana, Idaho	N/A	28; 1978; vii, viii, ix, x	The park consists of almost 9,000 square kilometres (9.7×1010 sq ft) of natural forest. The park contains half of the world's geothermal features including over 300 geysers, the world's largest concentration. In addition to its geographical sites, Yellowstone is significant for its natural history; nearly 150 species of fossil plants have been discovered within the park. Set aside in 1872 it is bears the distinction of being the first National Park in United States, and the world.
Kluane / Wrangell–St. Elias / Glacier Bay / Tatshenshini-Alsek		Valdez-Cordova Census Area, Yakutat City and Borough, Southeast Fairbanks Census Area, Hoonah–Angoon Census Area	Alaska (shared with Canada)	N/A	72; 1979, 1992 (extended), 1994 (extended); vii, viii, ix, x	The joint United States–Canada site located along the border between the two countries comprise the world's largest non-polar ice field and some of the world's longest glaciers. The region is also the natural habitat for a number of species including grizzly bears, caribou, Dall sheep, and every species of Alaskan salmon, some in greater numbers than found anywhere else.
Grand Canyon National Park	150px	Coconino and Mohave counties	Arizona	N/A	75; 1979; vii, viii, ix, x	The centerpiece of the park is the Grand Canyon, a gorge of the Colorado River. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,000 feet or 1,800 metres). Nearly two billion years of the Earth's geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted.
Everglades National Park		Miami-Dade, Monroe, and Collier counties	Florida	N/A	76; 1979; viii, ix, x	The park is the largest designated subtropical wilderness reserve in North America. Featuring a variety of wetlands and forests, it has become a sanctuary for a large number of birds, reptiles, and threatened or protected species. The property was placed on the List of World Heritage in Danger in 2010 due to degradation of the property resulting in a loss of marine habitat and decline in marine species. The property was previously listed as in danger from 1993–2007 due to sustained hurricane damage and deterioration of water flow and quality due to agricultural and urban development.
Independence Hall		Philadelphia	Pennsylvania	1753 (constructed), 1776, 1787. Steeple demolished 1781, replaced with new design 1828. Wings demolished 1812, reconstructed 1898.	78; 1979; vi	The building was designed by Andrew Hamilton and completed in 1753 to house the colonial assembly of the Province of Pennsylvania. It was the site of the Second Continental Congress during which the Declaration of Independence was signed in 1776. Following the American Revolution, the building held the Constitutional Convention which debated and signed the United States Constitution in 1787. Both documents have served as inspirations for lawmakers and government charters throughout the world.
Redwood National and State Parks		Humboldt and Del Norte counties	California	N/A	134; 1980; vii, ix	Located along the coast of northern California, the park is covered with coast redwood trees, the tallest and one of the most massive tree species on Earth. The park also contains areas of pristine coastline, which support nesting and feeding areas for several species of migratory waterfowl.
Mammoth Cave National Park		Edmonson, Hart, and Barren counties	Kentucky	N/A	150; 1981; vii, viii, x	Mammoth Cave is the longest cave system known in the world. With over 390 miles (630 km) of passageways, the cave system is home to more than 130 species.
Olympic National Park	150px	Jefferson, Clallam, Mason, and Grays Harbor counties	Washington	N/A	151; 1981; vii, ix	The park contains a diversity of ecosystems and varied topography ranging from the Pacific coastline, to alpine areas, temperate rainforests, and the forests covering the park's drier east side.
Cahokia		St. Clair County	Illinois	7th to 15th centuries	198; 1982; iii, iv	The site was the largest and most influential urban settlement in the Mississippian culture which developed advanced societies across much of what is now the Southeastern United States, beginning more than 500 years before European contact. The settlement covered nearly 1,600 hectares (4,000 acres) and included some 120 mounds.
Great Smoky Mountains National Park		Swain & Haywood counties in North Carolina; Sevier, Blount, & Cocke counties in Tennessee	Tennessee, North Carolina	N/A	259; 1983; vii, viii, ix, x	The park is one of the world's largest remaining remnants of the diverse Arcto-Tertiary Geoflora era, containing over 3,500 plant species and numerous animal species, including one of the world's greatest variety of salamanders.
La Fortaleza and San Juan National Historic Site		San Juan	Puerto Rico	15th to 18th centuries	266; 1983; vi	These structures were built between the 15th and 19th centuries to defend the harbor of San Juan, and are examples of European military architecture adapted to port cities on the American continent. La Fortaleza was the first defensive fortification built for the city. The historic site also comprises Castillo San Felipe del Morro, Castillo de San Cristóbal, El Cañuelo, and three-fourths of the old city wall.
Statue of Liberty		New York City	New York	1886	307; 1984l i, vi	Designed by Frédéric Bartholdi, the statue was a gift to the United States from the people of France. It has since become an icon of freedom and of the United States, and a welcoming signal to immigrants arriving from abroad.
Yosemite National Park		Tuolumne, Mariposa and Madera counties	California	N/A	308; 1984; vii, viii	Formed as a result of repeated glacial erosion of granitic bedrock over 10 million years, the park contains a unique diverse landscape of spectacular granite cliffs, waterfalls, clear streams, Giant Sequoia groves, and biological diversity.
Chaco Culture National Historical Park		San Juan and McKinley counties	New Mexico	10th to 12th centuries	353; 1987; iii	Formerly a major center of culture for the Ancient Pueblo Peoples, the park preserves one of the United States' most important pre-Columbian cultural and historical areas, hosting the densest and most exceptional concentration of pueblos in the American Southwest.
Hawaiʻi Volcanoes National Park		Hawaii County	Hawaii	N/A	409; 1987; viii	The park is home to Kīlauea and Mauna Loa, two of the most active volcanoes in the world. The volcanic eruptions in the area have resulted in frequently changing landscape, and rare flora and fauna.
Monticello and the University of Virginia		Albemarle County and Charlottesville	Virginia	18th and 19th centuries	442; 1987; i, iv, vi	Built between 1769 and 1809, Monticello was the plantation home of its designer, third President of the United States and author of the Declaration of Independence, Thomas Jefferson. Jefferson designed the early buildings that made up the University of Virginia in Charlottesville, inspired by his new ideas of university planning. The most prominent of these, The Rotunda, is a half-scale model of the Pantheon in Rome.
Taos Pueblo	150px	Taos	New Mexico	13th and 14th centuries	492; 1992; iv	The site is an ancient pueblo belonging to a Native American tribe of Pueblo people, marking the cultural development in the region during the Pre-Columbian era.
Carlsbad Caverns National Park		Eddy County	New Mexico	N/A	721; 1995; vii, viii	The park contains over 100 limestone caves, including Carlsbad Caverns and Lechuguilla Cave, which exhibit rare and unique speleothems. This is one of the few sites in the world where scientists can study these ongoing geological and biological processes in its pristine environment.
Waterton-Glacier International Peace Park		Flathead and Glacier counties	Montana (shared with Canada)	N/A	354; 1995; vii, ix	The joint United States–Canada site located along the border between the two countries has a unique, distinctive climate, physiographic setting, mountain-prairie interface, and tri-ocean hydrographical divide.
Papahānaumokuākea	150px	Honolulu County, Hawaii and Midway Atoll	Hawaii and United States Minor Outlying Islands	N/A	1326; 2010; iii, vi, viii, ix, x	The marine national monument encompasses 140,000 square miles (360,000 km2) of ocean waters, including ten islands and atolls of the Northwestern Hawaiian Islands, making it one of the world's largest marine protected areas. The area supports 7,000 species, one quarter of which are endemic. The area is regarded with traditional significance for living Native Hawaiian culture, as an embodiment of the Hawaiian concept of kinship between people and the natural world. The monument also contains the pre-European archaeological sites on the islands of Nihoa and Makumanamana.
Monumental Earthworks of Poverty Point		West Carroll Parish	Louisiana	1650 BCE	1435; 2014; iii	The vast earthen architecture of this site was constructed by a foraging society of hunter- gatherers, not a settled agricultural people, which makes it all the more remarkable a site. It is still not understood how and why such a society could so totally transform this landscape. It may well be the largest hunter-gatherer settlement that has ever existed. Not only was it the largest settlement of its time in North America, but its design was absolutely unique and its construction required an unprecedented amount (over 750,000 cubic meters) of earth-moving. Poverty Point was also the center of a major exchange network with goods brought in from as far as 1,600 kilometers (1,000 miles) distant.
San Antonio Missions		San Antonio	Texas	1700s, 1800s	1466; 2015; ii	The site encompasses a group of five frontier mission complexes situated along a stretch of the San Antonio River basin in southern Texas, as well as a ranch located 37 kilometres to the south. It includes architectural and archaeological structures, farmlands, residencies, churches and granaries, as well as water distribution systems. The complexes were built by Franciscan missionaries in the 18th century and illustrate the Spanish Crown’s efforts to colonize, evangelize and defend the northern frontier of New Spain. The San Antonio Missions are also an example of the interweaving of Spanish and Coahuiltecan cultures, illustrated by a variety of features, including the decorative elements of churches, which combine Catholic symbols with indigenous designs inspired by nature.

Sites by state

Yellowstone Mesa Verde Grand Canyon Everglades Independence Hall Redwood San Antonio Missions Mammoth Cave Olympic Cahokia Great Smoky Mountains Statue of Liberty Yosemite Chaco Culture Monticello U. of Virginia Taos Pueblo Carlsbad Caverns Waterton-Glacier Poverty Point Location of World Heritage Sites within the Contiguous United States
Hawaii Volcanoes Papahānaumokuākea Location of World Heritage Sites within the Hawaiian Islands
Kluane / Wrangell – St. Elias / Glacier Bay / Tatshenshini-Alsek Location of World Heritage Sites within Alaska	La Fortaleza San Juan National Historic Site Location of World Heritage Sites within Puerto Rico

Exclusive sites refer to sites locating in a single community. Shared sites refers to sites with entries in multiple states or shared with another country.

State	Exclusive sites	Shared sites
New Mexico	3	—
California	2	—
Arizona	1	—
Colorado	1	—
Florida	1	—
Hawaii	1	1
Illinois	1	—
Kentucky	1	—
Louisiana	1	—
New York	1	—
Pennsylvania	1	—
Puerto Rico	1	—
Virginia	1	—
Washington	1	—
Montana	—	2
Alaska	—	1
Idaho	—	1
North Carolina	—	1
Tennessee	—	1
Texas	1	—
United States Minor Outlying Islands	—	1
Wyoming	—	1

Tentative list

The following sites have been added to the United States' tentative list of inclusion on the World Heritage List. The tentative list for sites within the United States was last updated in 2008. In addition to sites within the 50 states, the tentative list includes one site in American Samoa, an unincorporated territory of the United States.

1. Civil Rights Movement Sites (Dexter Avenue King Memorial Baptist Church, Bethel Baptist Church, 16th Street Baptist Church)
2. Dayton Aviation Sites (Huffman Prairie Flying Field, Wright Cycle Company and Wright & Wright Printing, Wright Hall, Hawthorn Hill)
3. Fagatele Bay National Marine Sanctuary
4. Frank Lloyd Wright Buildings (Unity Temple, Frederick C. Robie House, Hollyhock House, Taliesin, Fallingwater, S. C. Johnson & Son Inc. Administration Building and Research Tower, Taliesin West, Price Tower, Solomon R. Guggenheim Museum, Marin County Civic Center)
5. Hopewell Ceremonial Earthworks (Fort Ancient State Memorial, Hopewell Culture National Historic Park, Newark Earthworks State Memorial)
6. Mount Vernon
7. Okefenokee National Wildlife Refuge
8. Petrified Forest National Park
9. Serpent Mound
10. Thomas Jefferson Buildings (Poplar Forest, Virginia State Capitol) — proposed extension of Monticello and the University of Virginia listing
11. White Sands National Monument

Notes

1. ^ Puerto Rico is an unincorporated territory within the United States.

2. ^ Midway Atoll is a part of the United States Minor Outlying Islands, a statistical designation of uninhabited insular areas of the United States and is administered as a National Wildlife Refuge.

See also

• Table of World Heritage Sites by country
• Tourism in the United States
• List of World Heritage Sites in the Americas

External links

• United States - UNESCO World Heritage Convention