If you or your child is interested in spies and secret codes, this museum on the grounds of the National Security Agency at Fort Meade can't be missed.
They have exhibits on everything from Civil War ciphers to Cray supercomputers, but my favorite was the Enigma machine.
This famous cipher machine from World War II was thought by the Germans to be absolutely secure, but Polish and British mathematicians discovered its vulnerabilities and cracked the code.
Visitors can now use the machine to send each other secret messages.
Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.