My work at 400 6th St., SW, WDC 20024? I can't ever remember the zip codes! The building definitely does not look as nice as some of the others, but it gets the job done.

Side note: If you set off the metal detector in the court house, they just let you through if you have a government badge. If you set off the metal detector in CFSA bldg, they search you like no other. Weird!