The National Museum of Computing, on the Bletchley Park campus, is to reopen in a few weeks time. And in the meanwhile, they present a 3D virtual tour:
Here’s are direct links: to the calculators, and the Curta and friends, and to the slide rules, and to the PDAs. Of course, there’s a great deal more to see, from EDSAC and WITCH to Cray.
Via Bruce on the HPCC forums.