Alexandria has approved a rezoning for Potomac Yard that will, over time, convert what is probably the largest strip mall inside the Beltway into a bona fide mixed use urban neighborhood. Along with the Arlington portion, redevelopment in Potomac Yard will finally stitch together the walkable nodes of Crystal City and Old Town Alexandria into one continuous 5-mile long corridor of urbanity.

By just about any measure, this new conglomeration will be the largest mass of walkable urbanism in the region, after central DC.