I would hate to be interrogated in a spiky CIA room (left), but seeing it would be cool! Although CIA HQ is located in Langley, VA, the J. Edgar Hoover FBI building is in the heart of downtown DC. Also, the Capitol and White House can be available for viewing with a call to your local congressman or Senator. And while touring, do as Evelyn Salt does and use the Metro Line subway system (right). It’s convenient and easy for escaping CIA operatives and city traffic. Tip: using the Metro at nonrush hours comes with lower travel fares.