I don't even know if my city has an archive (I guess logically it may do?!). I remember being spun out by this massive book from the 70s at my workplace that contained minutes from meetings (usually glued into the book though a couple had come loose), being surrounded on all sides by old documents would be something.
With that stupidly expensive scanner I'm guessing the documents are being digitised before they dust?
Glad your son enjoyed the excursion so much! One of the best things about homeschooling is learning right alongside them isn't it XD

yeah, the scanner makes digitalization of paper docs. Thus they keep a copy of them for the case if something happens with the original ones.
Unschooling opens much more doors;) At school we had NO excursions at all
Oh wow O_O a lot of the schools here do excursions as we used to semi-regularly see school groups out and about when we were roaming. I don't know how often though. I know the kids generally find it much more fun than being in school and some of the parents were grumpy about it because it's permission slips and additional costs and some parents even thought that it was a waste of time because they refuse to believe that learning can possibly happen anywhere other than in a classroom.
when I was a schoolgirl, we had some classes outside school, we went to the beach with our teacher (I remember 1-2 of such events). Now it happens very rare only in the first 3 classes and not in all schools. Private schools make lessons more interesting, so there kids really have better education but parents should pay for it, and it's possible not for all families.