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| | Arlington Heights -- Encyclopædia Britannica |
 | | An urban county in northern Virginia, Arlington is located across the Potomac River from Washington, D.C. It is connected to Washington by five bridges (the Francis Scott Key, Arlington Memorial, George Mason, Theodore Roosevelt, and Rochambeau Memorial) and adjoins the city of Alexandria to the south. |
 | | The Pentagon, or National Defense Building, is a five-story, five-sided structure in Arlington, Va. It is the headquarters of the United States Department of Defense, including all three military servicesArmy, Navy, and Air Force. |
 | | village, Cook county, northeastern Illinois, U.S. Settled in 1836, it was known as Dunton for Asa Dunton, the original settler, until the present name was adopted in 1874. |
| www.britannica.com /eb/article-9009491?tocId=9009491 (790 words) |
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