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Photo: NortyNort, CC BY-SA 4.0 via Wikimedia Commons
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.
Scott's Run Nature Preserve is a nature preserve in Fairfax County, Virginia, United States. Located in McLean, it is bordered by Virginia State Route 193 to its south, Interstate 495 to its east and the Potomac River to its north. It encompasses 336 acres (136 ha) of woodland with its namesake, Scott's Run, flowing through its west side. Scott's Run originates in nearby Tysons Corner and enters the Potomac on the northwest side of the preserve. The preserve is noted for including eastern hemlocks among its plant life, which are rare for the area. It is a popular destination for recreation and hiking and is operated by the Fairfax County Park Authority.
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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.