An excellent crowfunded shout out to keep the Bombe on the Bletchley Park Estate. I have pledged a years membership of the TNMOC.
The link for pledging is as follows: https://www.crowdfunder.co.uk/new-display/
I visited TNMOC a few years ago. In addition to the Bombe, my favorate was the WITCH. It uses Dekatron values … which operate in base 10. It is cool to see it working, it’s like you can see it thinking.
This video is a reboot of it on 20th Nov 2012.