National Cryptologic Museum
Enigma, SIGABA, code talkers, and declassified documents connect cryptography’s machines with the people who used them.
Artwork inspired by Charles Willson Peale
The National Cryptologic Museum puts once-secret devices into a public historical setting near Fort Meade. Enigma and SIGABA are more than famous boxes: each embodies decisions about a changing key, secure communication, and the consequences when a system is broken—or remains intact. The human work of gathering signals, making sense of patterns, and protecting sources runs alongside the hardware.
Visitors can follow cryptology from early American ciphers through twentieth-century conflict and later communications. A declassified object cannot tell the whole story on its own, so labels and oral histories matter as much as an impressive machine. The museum is open to the public without charge, but it is not an invitation to enter the adjacent NSA campus; use the museum’s separate public approach.
- Agency
- National Security Agency
- Devices
- Enigma and SIGABA
- Public access
- Free
Quick guide
- Compare machines
- Ask what changes with every encrypted message.
- Use the public entrance
- The museum is outside the secure NSA campus.
Know before you go
- Read the mechanism
- A rotor machine’s moving parts alter each character’s substitution.
- Follow a person
- Find a code talker or analyst story beside the device.
- Ask about evidence
- A declassified document is a partial view of secret work.
- Check Saturday
- Only the first Saturday is normally open.
Good to know
“Open Saturday” means the first Saturday of the month, not every weekend. The museum address is distinct from the Fort Meade security gate.
Notice these
- Rotor cipher machines
- Declassified records
- Human intelligence stories