Pentagon | |
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Height | 24m |
Floors | 7 |
Year | 1943 |
City | Washington D.C. |
The Pentagon is the headquarters building of the United States Department of Defense.
As a symbol of the U.S. military, the phrase The Pentagon is also often used as a metonym for the Department of Defense and its leadership. Located in Arlington County, Virginia, across the Potomac River from Washington, D.C., the building was designed by American architect George Bergstrom and constructed by contractor John McShain. Ground was broken on 11 September 1941, and the building was dedicated on 15 January 1943. General Brehon Somervell supplied the important motivating power behind the project; Colonel Leslie Groves was responsible for overseeing the project for the U.S. Army. The Pentagon is the world's largest office building, with about 6,500,000 sq feet (600,000 m2) of space, of which 3,700,000 sq feet (340,000 m2) are used as offices. Some 23,000 military and civilian employees, and another 3,000 non-defense support employees, work in the Pentagon.Four World Trade Center | |
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Height | 298m |
Floors | 65 |
Year | 2014 |
City | New York City |
4 World Trade Center (also known by its street address, 150 Greenwich Street) is a skyscraper that's part of the World Trade Center complex in New York City. It is situated on the southeast corner of this 16-acre (6.5 ha) World Trade Center site, where the original nine-story 4 World Trade Center stood. Pritzker Prize-winning architect Fumihiko Maki was awarded the contract to design the 978-foot-tall (298 m) building. It houses the headquarters of the Port Authority of New York and New Jersey (PANYNJ).The building's groundbreaking took place in January 2008, and it opened to tenants and the general public on November 13, 2013. As of 2016, it's the third tallest skyscraper in the rebuilt World Trade Center, supporting One and 3 World Trade Center. However, 2 World Trade Center is expected to surpass the height of both 4 and 3 WTC upon completion. The whole floor space of the building comprises 1.8 million square feet (167,000 square meters) of office and retail space.
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