The National Cryptography Museum; Don't Feel Bad You Didn't Know About It. I think that's the point.

No. It's not a museum about the CRY-baby of a company cryptologic, but of Cryptography, an ever fascinating, fiendishly complex, and ever necessary practice. The farthest I have ever gotten into the subject was a visit to Bletchley Park and reading Alan Turing's harrowing biography. But when I am next at the NSA, I'll be sure to give a look in. Directions can be found here. In an unrelated matter, I met someone who had actually met Sir. William Stephenson and not just his biographer William Stephenson.