Thanks to a posting on the Yahoo Japan Trains group I got to hear about the Railway Technical Research Institute Open Day. The research complex at Kunitachi is usually open once a year to allow the staff to show the public what they work on.
I went along this afternoon and took a few photos.
The rail welding demonstration is quite a spectacular display of pyrotechnics
Several of the large machine shops used for testing railway technology were open. This one is used to test the tensile strength of rails:
rattle the rail.
You could take a two minute ride on the Hi-Tram, if you were prepared to queue for, what looked like, quite a while.
Inside there are plenty of indoor attractions too. Model railways were very popular:
here if you would like to see more.