For those not presently able to visit Bletchley, and who can make use of a visual experience, here’s a virtual tour of TNMoC. There are, it seems, 77 locations you can navigate around. Also a floorplan and a dollshouse view.
It looks like this:
(here we see the microcomputer area, with Atari 800, BBC Micro, Apple II, and Acorn Electron. All powered up with screens, chairs, joysticks.)
And this:
(On the left a Transputer system displaying a Mandelbrot, on the right a Cray 1-S/2000, with note “Please do not sit on the bench seat”.)
And here’s the EDSAC rebuild:


