Merrybrook Run Stream Valley Park

McNair is a census-designated place located in the Oak Hill section of Fairfax County, Virginia, United States. It is directly to the east of Washington Dulles International Airport. The population as of the 2010 census was 17,513. Much of the population resides in the McNair Farms planned community.

Innovation Center (preliminary names Route 28, Herndon – Dulles East) is a planned Washington Metro station in Fairfax County, Virginia on the Silver Line. It will be located adjacent to the Virginia Center for Innovative Technology at the intersection of the SR 267 and SR 28 in McNair, near the Fairfax / Loudoun county line.

Merrybrook is the only known remaining home of American Civil War Confederate spy Laura Ratcliffe. The house is located south of Herndon, Virginia, in Fairfax County. She lived here from the earliest days of the Civil War until her death in 1923. The interior, out-buildings and grounds still retain the atmosphere of earlier times.