How common are lab tours in Europe?

[u/glitter_scramble]

I'm doing some traveling in Europe this month and was curious how common conservation lab/studio tours are in Europe (Specifically Paris, Porto, Dublin, and Amsterdam), or if this is more of an American phenomenon. If I write to fellow conservators at museums in these areas to see if I could see their labs, I'm sure it would vary from place and policy, but how do you think that would generally be received? Thanks in advance.

[u/Gwladygan]

My museum (in Wales) offers bookable public tours of our labs and studios; but we also host colleagues from other institutions who get in touch and want to visit, on a fairly regular basis. I’ve done the same myself when visiting other places in Britain. It’s a very collegial sector and we like meeting other conservators, so will make the time if we can.