World Trade Center Attack
"The Second Day of Infamy"
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World Trade Center Attack"The Second Day of Infamy" |
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• Headquarters of the U.S. Department of Defense (Army,
Navy and Air Force)
• Five-sided building in Arlington County, Virginia, covering 34 acres. • Designed by George Edwin Bergstrom. • Built 1941-43 at a cost of $83 million. • Has five floors and is built of structural steel and reinforced concrete. • Building has five concentric pentagons or rings. • Large concourse within it for Pentagon workers. • One of the world's largest office buildings with three times the floor space of the Empire State Building in New York. • 3.7 million square feet of usable floor space for approximately 23,000 people. |
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