Arlington is an urban county with a population of approximately 200,000. Located in Virginia on the Potomac River immediately across from Washington, D.C., Arlington is one of the smallest counties in the United States and was once a part of the District of Columbia. Arlington has been very successful in its planning; utilizing Smarth Growth techniques for which it has won awards, the majority of devolpments in the county occur in the near vinicity of transit facilities.
Arlington is best known for the Arlington Cemetery and the Pentagon. Founded during the Civil War on Robert E. Lee's property, the Arlington National Cemetery is the most famous military burial ground and the second largest national cemetery. The Tomb of the Unknown Soldier is located here, honoring all American soldiers who died in service and were never identified by their remains. The Pentagon is the home of the United States Department of Defense. Built during WWII, the Pentagon was targeted during the Cold War and was seriously damaged in the September 11th terrorist attacks.
Arlington isn't all business, of course; the area is home to several annual festivals and event series. Located in the Ballston area of Arlington, the Taste of Arlington festival is a fun and lively street event with plenty of food, entertainment and games. The Arlington County Fair is another annual event that draws a large crowd. Other event series, such as Arts al Fresco, offer free outdoor summer concerts each year. Many visitors and residents of Arlington take advantage of all the paved off-road bicycle paths along the Potomac River as well as on the unused railroad beds.