Crystal City, Arlington, Virginia Crystal City, Arlington, Virginia Crystal City is an urban neighborhood in the southeastern corner of Arlington County, Virginia, south of downtown Washington, D.C. Due to its extensive integration of office buildings and residential high-rise buildings using underground corridors, travel between stores, offices, and residences is possible without going above ground; thus, a large part of Crystal City is an underground city. Crystal City includes offices of numerous defense contractors, the United States Department of Labor, the United States Marshals Service and many satellite offices for The Pentagon. It is also the location of Ronald Reagan Washington National Airport. Crystal City
Construction of the Virginia approaches to Arlington Memorial Bridge or disapprove any major construction project on or within view of federal property but also to approve road construction in the region which used federal funds. The agency had long stated its intention to support the urbanization of Arlington County (in part to provide for more and better housing for the federal workforce, and to improve the capital's economy). The Virginia State Highway Commission was considering a number of routes, some of which skirted rather than passed through Arlington County. However, the NCPC and the CFA both said in July 1927 that they would approve any route chosen by the