Hello,
I just finished work on a smaller tour of the Smithsonian's National Postal Museum. It is a very cool place. Here are the links:
http://npm.si.edu/fireandice/virtualtour.html
http://npm.si.edu/systemsatwork/virtualtour.html
http://npm.si.edu/mobile
The first two are different entry points into the same tour, but originate in seperate exhibits. The third is the mobile version of the tour (i.e., use a smartphone or tablet to view it).
P.S. Thank you Klaus for making this possible. Krpano is a brilliant piece of work and well worth the modest cost! (BTW - It's important to me that I have followed licensing correctly, so let me know if I am good.)
P.S.#2 Thanks to Andrey as well for the excellent mobile interface template!
R,
Loren