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Natural Bridges National Monument

(Encyclopedia)Natural Bridges National Monument, 7,636 acres (3,093 hectares), SE Utah; est. 1908. Located in an area of colored cliffs and box canyons, the monument contains three huge natural sandstone bridges: O...

Brookhaven National Laboratory

(Encyclopedia)Brookhaven National Laboratory, scientific research center, at Upton (town of Brookhaven), Long Island, N.Y. It was founded in 1947 by Associated Universities, a management corporation sponsored by ni...

Montezuma Castle National Monument

(Encyclopedia)Montezuma Castle National Monument, 858 acres (347 hectares), central Ariz.; est. 1906. Montezuma Castle, built c.1250, is a 5-story, 20-room dwelling perched high in the cavity of a cliff. It was nam...

Rainbow Bridge National Monument

(Encyclopedia)Rainbow Bridge National Monument, 160 acres (65 hectares), S Utah; est. 1910. Rainbow Bridge, the largest natural bridge in the world, is a symmetrical, pink, sandstone arch, 309 ft (94 m) high, 33 ft...

Buffalo, city, United States

(Encyclopedia)Buffalo, city (2020 pop. 278,349), seat of Erie co., W N.Y., on Lake Erie and the Niagara and Buffalo rivers; inc. 1832. With more than 37 mi (60 km) of...

Theodore Roosevelt National Park

(Encyclopedia)Theodore Roosevelt National Park, 70,447 acres (28,531 hectares), W N.Dak., in the Badlands and on the Little Missouri River; est. 1947. There are three units—the North Unit, the Elkhorn Ranch Unit,...

Aztec Ruins National Monument

(Encyclopedia)Aztec Ruins National Monument, 318 acres (129 hectares), NW N.Mex., near Farmington; est. 1923. Ruins of a 12th-century Pueblo town contain interesting kivas, one of which has been completely restored...

Bryce Canyon National Park

(Encyclopedia)Bryce Canyon National Park, 35,835 acres (14,513 hectares), SW Utah; est. 1924. The Pink Cliffs of the Paunsaugunt Plateau, c.2,000 ft (610 m) high, were formed by water, frost, and wind action on alt...

Pecos National Historical Park

(Encyclopedia)Pecos National Historical Park, 6,671 acres (2,702 hectares), N New Mexico; est. as a national monument 1965, designated a national historical park 1990. The park contains the remains of the Pecos pue...

Wind Cave National Park

(Encyclopedia)Wind Cave National Park, 28,295 acres (11,459 hectares), in the Black Hills, SW S.Dak.; est. 1903. Wind Cave, discovered in 1881, was named for the strong air currents that blow alternately in and out...