Last week, my class went on a field trip to the National Cryptologic Museum and the National Spy Museum, and they both were great! We had a seminar on Cryptography with a guest professor and it was really enjoyable. It involved a lot of math, which I usually hate and try to run from, but this time it was actually fun.
The National Spy Museum was cool because you were able to assume a different identity and see all different types of real life spy gear and protocol. It blended elements of fiction, in terms of the Bond movies, and reality, in terms of international spy rings. At the end there was a gift shop where you could purchase spy stuff you saw throughout.
The Cryptologic Museum was sponsored by the NSA and showed how cryptography has been used throughout history, even influencing the outcome of war. Being able to see the real life impact of cryptography and spying, was really powerful and made me understand it much more deeply than I previously had.