The only facility dedicated to the study of international espionage, this museum has a permanent collection of artifacts and spy gadgets (such as a pistol disguised in a lipstick case that was used by the KGB). There also are rooms devoted to spy work during World War II, the spy-versus-spy world of the Cold War, and the dangers that we face today. Fittingly, the museum is near the FBI headquarters, just north of the National Mall.