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.
Centro de Comercio Internacional
Centro de Comercio Internacional is an office skyscraper located in Bogotá, Colombia. The construction is 190m/623 ft, 50 floors. The construction is another neighbor of the second largest skyscraper in Colombia, Torre Colpatria. Located inside this construction are some of the offices of Davivienda Bank which recently obtained the rights of this construction. When it was built, it was known as Centro Las Americas.Source: Wikipedia
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