Before the COVID thing I was travelling in Eastern Europe and after I had to give up and come home in lockdown I got into retrocomputing channels on YouTube and started doing some coding on disk and tape formats for old 8-bit computers, all of which led me to find out that there was a whole range of locally made computers from Russia and the Eastern Bloc in the '80s and '90s. Especially clones of the British Sinclair ZX Spectrum, my first computer.
Even though I went to lots of secondhand shops in the Baltic countries, it didn't occur to me to look for old local computers, which I came to regret once I was home and found out there were ones made in countries I'd just been in, including Romania, Poland, and Lithuania.
So when this whole COVID thing hopefully recedes a bit and we can travel again I'll be heading back to Eastern Europe. Are there some computing museums over there that include local 8-bit machines such as Spectrum clones, PDP-11 clones, etc?
Anywhere from Russia to Bulgaria to Albania to Armenia, basically any of the former communist countries.
Update to focus the original intent of the question
When writing this question I didn't stop to think that one interpretation of "retrocomputing" was simply "old computers". This was silly of me and I didn't expect such a flood of answers, some of which are now getting a bit wide of the mark. I didn't intend to make a list question on all technology museums in Europe.
By "retrocomputing" I meant computers and related such as electronic games, now obsolete, from around the start of the microcomputer boom, up to around about the era of ubiquitous Wintel beige box. So this would include the 8-bit and 16-bit eras, and especially now-defunct lines.
By "Eastern Bloc" and "local" I meant basically the stuff we didn't see in the west at that time because of the "iron curtain". That would include anything totally invented in that area, clones of western tech, but even localized versions of western tech before the time western versions supported other languages out of the box. So anything modified or hacked to work with Cyrillic or accented letters would still qualify.
So big lists of computer museums located in Germany or Eastern Europe but only having an old Mac, a few old 386's, and an NES shouldn't be added. At least one local clone of an NES or Apple II that runs in Cyrillic definitely qualifies.
Basically I want to see the stuff that existed when I was growing up but would never have heard of, or would never have seen or touched even if I've heard of it.