Comment by dcminter
Jodrell Bank⁰ is open to visitors; not in Wales, but not a million miles away either.
I remember reading something in The Hitch-hikers Guide to the Galaxy as a child and not just not knowing where "Jodrell Bank and Woomera" were, but not knowing what manner of thing they were either :)
I've only been once, but I highly recommend Blue Dot Festival, which is a music and science festival held at Jodrell Bank. On the one hand it's a classic UK music festival, but alongside the usual stalls selling Peruvian hats and vegan wraps there are lots of stalls with grad students sharing cool stuff that they're working on. Like the best festivals it's good for kids but also good for all night drum and bass sessions. https://discoverthebluedot.com/