National Cryptologic Museum

The National Cryptologic Museum is an American museum of cryptologic history that is affiliated with the National Security Agency . The first public museum in the U.S. Intelligence Community, NCM is located in the former Colony Seven Motel, just two blocks from the NSA headquarters at Fort George G. Meade, Maryland. The museum opened to the public on December 16, 1993, and now hosts about 50,000 visitors annually from all over the world. Wikipedia*

On the C-SPAN Networks:
National Cryptologic Museum has hosted 1 event in the C-SPAN Video Library; the first program was a 2014 Vignette.