Antelope Canyon is the most-visited and most-photographed slot canyon in the American Southwest.
The Space Power Facility (SPF) is the world’s largest vacuum chamber measuring 30 meters tall and 37 meters across.
Located just over eight hundred kilometers away from the North Pole, the community of Alert, on the northeastern tip of Ellesmere Island, in Nunavut, Canada, is the most northerly permanent settlement in the world.
The Mount Weather Emergency Operations Center is a civilian command facility in the U.S. state of Virginia, used as the center of operations for the Federal Emergency Management Agency (FEMA). Also known as the High Point Special Facility (HPSF), its preferred designation since 1991 is “SF”.
ATLAS-I is world’s largest wood and glue structure designed to test the radiation hardening of strategic aircraft systems against EMP pulses from nuclear warfare.
Under the foundation of Phoebe Hearst Memorial Hall at Oglethorpe University in Georgia, the United States, is a large room, that was sealed shut with a welded stainless steel door more than seventy five years ago.
The Kinzua Bridge or the Kinzua Viaduct was a railroad trestle that spanned Kinzua Creek in McKean County in the U.S. state of Pennsylvania. The bridge was 301 feet (92 m) tall and 2,052 feet (625 m) long. Most of its structure collapsed during a tornado in 2003.
Presidio Modelo (Model Prison) was a former “model prison” of Panopticon design, located on the Isla de la Juventud in Cuba, built between 1926 and 1931, during the repressive regime of Gerardo Machado.
Niagara Falls is the collective name for three waterfalls that straddle the international border between Canada and the United States; more specifically, between the province of Ontario and the state of New York. They form the southern end of the Niagara Gorge.
Fly Geyser, also known as Fly Ranch Geyser is a man-made small geothermal geyser located in Washoe County, Nevada.
On the Maryland side of the Potomac River just west of Chesapeake Bay, the largest shipwreck fleet in the Western Hemisphere sits half-sunk and decomposing.
For years, boozers from the Texas A&M University in College Station, Texas, and elsewhere, have been paving a short alley located between the pub Dry Bean and the restaurant Dixie Chicken, with used bottle caps.
Horseshoe Bend is the name for a horseshoe-shaped meander of the Colorado River located near the town of Page, Arizona, in the United States.
The Domino Sugar Refinery is a former refinery in the neighborhood of Williamsburg in Brooklyn, New York City. It was the original refinery of the American Sugar Refining Company, which produced Domino brand sugar.
Alcatraz Island is located in the San Francisco Bay, 1.5 miles (2.4 km) offshore from San Francisco, California, United States. Often referred to as “The Rock”, the small island was developed with facilities for a lighthouse, a military fortification, a military prison (1868), and a federal prison from 1933 until 1963.
The Naica Mine of the Mexican state of Chihuahua, is a working mine that is best known for its extraordinary selenite crystals.