Closure notice: The NCM will be closed on Sept. 2 and 3 due to maintenance and will reopen on Sept. 4. 
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Open Tuesday - Saturday: 10 a.m. to 4 p.m.
FREE Admission

 

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National Cryptologic Museum Special Events

The NCM hosts various virtual and in-person special events to educate the public on the role of cryptology in shaping America’s history.