This is the major professional and commercial area of Ballston, an affluent section of Arlington, Virginia.  These were taken near the Virginia Square Metro Station; just north of George Mason University.  (Do college students eat frequently at these upscale cages and gourmet delis?  When I was going to school in Fredericksburg, we splurged when we went to Olive Garden after a formal.)

Also just a few blocks away is the Defense Advanced Research Projects Agency (DARPA).