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Photo: Carol M. Highsmith, Public domain via Wikimedia Commons
The headquarters of the most well-known intelligence agency of the United States government is in a part of McLean that is sometimes still called "Langley". Tours are given only with special arrangement to academic and civic groups, not to the public. Even attempting to drive down the road leading up to the CIA can get you in trouble. However, there is a virtual tour on the CIA's web site.
The George Bush Center for Intelligence is the headquarters of the Central Intelligence Agency (CIA), located in the unincorporated community of Langley in Fairfax County, Virginia, United States, near Washington, D.C.
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Named for the small stream that tumbles over a dramatic waterfall before ending in the Potomac, Scott's Run Nature Preserve is criss-crossed by hiking trails, many of them challenging as they follow the rocky cliffs and sheer bluffs overlooking the river. A section of the Potomac Heritage Trail crosses through the park east to west.