https://www.micropia.nl -- A museum of microscopic life. With actual living exhibits and a bunch of microscopes you can play with. They have a lab on site to maintain the exhibition. How cool is that?
https://www.teylersmuseum.nl/en -- Loads of old fashioned, steampunk-looking gadgets. Leyden jars, old microscopes in brass, that kind of thing.
https://www.hnf.de/start.html -- Heinz Nixdorf Museum, the largest computing museum. You get to play with a working phone exchange and a whole bunch of other stuff.
https://www.rmg.co.uk/cutty-sark -- Cool ship, and you can also have lunch under it, because the whole thing is suspended over people's heads. There's a huge and very nice park nearby too.
https://frammuseum.no/ -- Ship that was used in Arctic and Antarctic exploration
https://norskfolkemuseum.no/ -- Norwegian Museum of Cultural History. Close to the one above.
https://15kop.ru/en -- Museum of Soviet Arcade Machines. Probably not the best time to travel to Moscow, but maybe when things quiet down.
Now, almost any museum is interesting; the displays and exhibits will connect to things I already know about, places I have been, history I have already learned, cultures I've experienced, and something in my accumulated wisdom will make a new connection and fit better.
Eventually it reaches the point where things that should sound like parodies, like a museum of drainage, becomes genuinely interesting.
There are plenty museums full of cool stuff that's either interesting them, or can be played with, or are outdoors and can be handled as just a pleasant walk through a cool looking place.
The museum was aimed at children and the exhibit consisted of many practical "magic tricks" illustrating some piece of science or technology. Things such as electromagnets, refraction effects, color theory, optical illusions, simple mechanical devices, simple chemistry experiments, etc. For example I remember first learning about the brachistochrone curve at this museum, even though I was too young at the time to know or care about its name. Or that you could use red cabbage juice as a natural pH indicator.
Unfortunately the museum never got much funding or interest from the government, and at some point the museum was destroyed (possibly illegally) to make room for a shopping mall.
Looking back on it, I find it funny that out of all the amazing things there (a full sized rocket, some kind of capsule you could actually sit in and play with the controls on), the thing that continually fascinated me the most was a little audio visualiser with a microphone, so when you spoke into it the line would deform.
What do these have to do with one another?
As long as you have any interests there should be museums relating to those.
What I would like, however, is free visits to Starbucks. Perhaps that makes me a simple guy, but I just love a good cup of coffee if I am feeling a bit down. It jabs me right back to reality and rationality usually.