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Existing comment: Parks In Your Backyard

One of the largest concentrations of National Park Service units is in and around Washington, D.C. Much of the District's federal parkland, such as the National Mall, dates to the capital's creation in 1790 and the L'Enfant Plan of 1791. The National Capital Region, administered by the National Park Service since 1933, also includes sites in Maryland and Virginia. Numerous postage stamps recognize parks, some of which are associated with voluminous correspondents such as Clara Barton and Frederick Douglass, who generated much postal history.

Did You Know?
The Washington Monument was the tallest building in the world when it was completed in 1884?
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