The International Spy Museum, located in Washington D.C. Is the United States only museum dedicated to the field of espionage. Open since July, 2002, the International Spy Museum showcases over 200 gadgets, bugs, vehicles, cameras, weapons, and technologies used in matters of espionage throughout the world. From microdots, invisible ink, and button hole cameras. To bugs of all sizes and submarine recording systems. The opportunity for learning from this institution are many. If you're interested in these matters, then I'm sure one would like to know how and why these products were invented. The answers to these questions and more lie inside of the International Spy Museum's walls. Interesting to most travelers are the stories of specific spies such as Harriet Tubman, Moses, George Washington, and Joseph Stalin. The entrance fee is well worth it. To avoid crowds the recommended times to attend the International Spy Museum are week-days, early in the day. The International Spy Museum ranks 73 of a total 246 coming attractions in D.C. Considered amongst travelers, is participating in “Operation Spy,” scenario before entering the museum. Pretend to be a spy solving a case, this builds up to the climax, in which you enter the museum and interact with the exhibit pieces. A definite stop on the D.C. Tour.