{Comstock Mine} Mine is in Virginia City, Nevada.
{Fort Knox} Fort is in north-central Kentucky.
{Pearl Harbor} Harbor is at Honolulu in south Oahu Island, Hawaii.
{Pharos Lighthouse} Ancient lighthouse is under water in Alexandria, Egypt.
Structures {structure, building} include buildings, dams, highways, and parks.
{Bay Bridge} Bridge is from San Francisco to Oakland in California.
{Brooklyn Bridge} Bridge is from Manhattan to Brooklyn in New York City.
{George Washington Bridge} Bridge is from Manhattan in New York City.
{Golden Gate Bridge} Bridge is from San Francisco to Marin County in California.
{Mackinac Bridge} Bridge crosses peninsulas in north Michigan.
{Verrazano Narrows Bridge} Bridge is in south New York City.
{Appomattox Court House} Civil War surrender site is in central Virginia.
{Orly Airport} Airport is near Paris, France.
{Parthenon Temple} Temple is in Athens, Greece.
{Roman Forum} Forum in Rome had government buildings and monuments.
{Trafalgar Square} Square is in London, United Kingdom.
{Altamira Cave} Cave with prehistoric drawings is in north Spain.
{Carlsbad Caverns} Caverns are in southeast New Mexico.
{Lascaux Cave} Cave with prehistoric drawings is in southwest-central France.
{Mammoth Cave} Cave is in southwest-central Kentucky.
{Arlington National Cemetery} Cemetery is in north Virginia, south of Washington, DC.
{Golden Gate Cemetery} Cemetery is south of San Francisco, California.
{Aswan High Dam} Dam is on upper Nile River in Egypt.
{Boulder Dam} Dam is on Colorado River between Nevada and Arizona. Another name is Hoover Dam.
{Grand Coulee Dam} Dam is in northeast-central Washington.
{Hoover Dam} Dam is on Colorado River between Nevada and Arizona. Another name is Boulder Dam.
{Alaska Highway} Highway goes from Dawson Creek, British Columbia, to Fairbanks, Alaska. It is also Alcan Highway.
{Appian Way} Ancient road goes from Rome to Brindisi, Italy.
{Jodrell Bank Observatory} Observatory is in west England.
{Palomar Observatory} Observatory is in south California.
{Bryce Canyon} Park is in Utah.
{Craters of the Moon} Park is in southeast-central Idaho.
{Death Valley Park} Park is in southeast California.
{Devil's Postpile} Devil's Postpile National Monument.
{Glacier National Park} Park is in northwest Montana.
{Grand Canyon} Park is in northwest Arizona, on Colorado River.
{Grand Teton} Park is in northwest Wyoming.
{Hot Springs National Park} Park is in west-central Arkansas.
{Joshua Tree National Monument} Joshua Tree National Monument is in south California desert.
{Kalahari National Park} Park is in Namibia.
{King's Canyon Park} Park is in east California.
{Monument Valley} Park is in northeast Arizona and southeast Utah and contains sandstone formations.
{Petrified Forest} Park is in northeast Arizona and has tree remains.
{Sequoia National Park} Park is in northeast-central California.
{Serengeti National Park} Park is in Tanzania.
{Yellowstone National Park} Park is in northeast Wyoming, east Idaho, and south Montana.
{Yosemite National Park} Park is in east-central California.
{Cahokia Mounds} Prehistoric mounds are in south Illinois.
{Casa Grande} Prehistoric cliff dwellings are in south-central Arizona.
{Gila} Prehistoric cliff dwellings are in southwest New Mexico.
{Mesa Verde} Prehistoric cliff dwelling is in southwest Colorado.
{Stonehenge} Prehistoric stone slabs are in south-central England.
{Alcatraz Prison} Federal prison was on small island north of San Francisco.
{Leavenworth Prison} Federal prison is in northeast Kansas.
{San Quentin Prison} Federal prison is in east Marin County, north of San Francisco.
{Sing Sing Prison} Federal prison is in upper New York State.
{Chisholm Trail} Old cattle trail goes between San Antonio, Texas, and Abilene, Kansas.
{Oregon Trail} Pioneer route goes from Missouri to Washington.
{Santa Fe Trail} Pioneer route goes from Kansas City, Missouri, to Santa Fe, New Mexico.
{Great Wall of China} Wall is between China and Mongolia and is 2000 miles long.
{Hadrian's Wall} Wall is in north England.
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Description of Outline of Knowledge Database
Date Modified: 2022.0225