I visited the International Spy Museum at 9 am on a February Saturday. The museum is filled with many interesting and well-thought out interactive experiences. It covers the world of spying from the beginning of written history to the near present day. Everything from Ceasar's use of crypto-wheel to hidden cameras and Bond's car. Both real spies and imaginary ones are covered. The rooms of the museum are small, and although not crowded that cold winter morning, I could only imagine how difficult the experience would be during tourist season (spring, summer and fall). The gift shop and museum store has a great selection. I highly recommend a visit despite the $18 admission price. I did not participate in extra add-on experiences, so I cannot speak to them. A careful walk through the museum, reading most of the exhibits took 2.5 hours when it was not crowded. I suggest you, too, visit during the winter months.