The Pentagon

The Pentagon
Location in the Washington, D.C. area
General information
Status	Complete
Architectural style	Stripped Classicism
Location	Arlington County, Virginia
Address	1400 Defense Pentagon, Washington, D.C. 20301-1400
Coordinates	38°52′16″N 77°03′21″W / 38.87099°N 77.05596°W / 38.87099; -77.05596
Construction started	September 11, 1941; 82 years ago (1941-09-11)
Completed	January 15, 1943; 81 years ago (1943-01-15)
Cost	$83 million ($1.53 billion in 2021 dollars[1])
Owner	United States Department of Defense
Height
Roof	71 feet (22 m)[2]
Top floor	5
Technical details
Floor count	7
Floor area	6,636,360 square feet (620,000 m2)
Design and construction
Architect	George Bergstrom David J. Witmer
Main contractor	John McShain, Inc.
Other information
Parking	67 acres
References
Pentagon Office Building Complex
U.S. National Register of Historic Places
Virginia Landmarks Register
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Location	Jefferson Davis Hwy./VA 110 at I-395, Arlington, Virginia
Area	41 acres (17 ha)
Built	1941 (1941)
Architect	Bergstrom, G.E.; Witmer, D.J.
Architectural style	Classical Revival, Modern Movement, Stripped Classicism
NRHP reference No.	89000932[3]
VLR No.	000-0072
Significant dates
Added to NRHP	July 27, 1988
Designated VLR	April 18, 1989[4]

The Pentagon is the headquarters of the United States Department of Defense. It is in Arlington, Virginia (near Washington, D.C.). It has limestone walls. It is in the shape of a pentagon, and has seven floors.

The Pentagon is the largest office building in the world,^[5][6] but any place in the building can be reached within 7 minutes.

Construction began on September 11, 1941. Exactly sixty years later, on September 11, 2001, it was hit with an airplane by terrorists.^[7] The crash killed a total of 189 victims (125 in The Pentagon, 64 in plane).^[8]

1. ↑ 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved April 16, 2022.
2. ↑ "Facts: Navigating The Pentagon". pentagontours.osd.mil. Archived from the original on January 11, 2018. Retrieved January 10, 2018.
3. ↑ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
4. ↑ "Virginia Landmarks Register". Virginia Department of Historic Resources. Retrieved May 12, 2013.
5. ↑ "10 Largest Office Buildings In The World". SpaceIQ. Retrieved June 29, 2020.
6. ↑ "The Pentagon". Greatbuildings.com. Retrieved October 26, 2008.
7. ↑ "Flight 77, Video 2". Judicial Watch. Archived from the original on February 12, 2009. Retrieved June 1, 2010.
8. ↑ "Pentagon Memorial". National Geographic. February 21, 2012. Archived from the original on July 3, 2020. Retrieved June 29, 2020.