International Spy Museum: The story of spies, intelligence operations and deceptions that changed the course of history.National Postal Museum: Dedicated to the preservation, study and presentation of postal history and philately through stamps and objects.Smithsonian National Museum of American History: A collection of more than 3 million artifacts displayed in exhibits and within the archives that focuses on American history and culture, and includes public and educational programs.The City Museum: The story and history of the city through exhibits and galleries, a multimedia theater, a research library, and reading room.