Here's how the Washington & Old Dominion railroad created Northern Virginia's suburbs – Greater Greater Washington
Today, the Washington & Old Dominion (W&OD) is a paved trail used for fun and commuting across Northern Virginia. Of course, originally the Washington & Old Dominion was a railroad — one with a long and convoluted history that helped form Dunn Loring, Reston, Herndon, Sterling, Ashburn, and other communities that still exist to this day.
United States Al Iskandariyah Bluemont Junction Falls Church Loudoun County Northern Virginia Regional Park
Source: ggwash.org