In Switzerland, the rule that every house must be constructed with an appropriate fallout shelter has only been relaxed 10 years ago.
https://www.reuters.com/article/us-swiss-bunker-idUSTRE7B01R...
https://www.reuters.com/article/us-swiss-bunker-idUSTRE7B01R...
The thing that really struck me at the time was not so much the building, but the security. There were card-access only doors every few yards, and they wouldn't give me even a visitor card - I had to be escorted to the lav and canteen all the time, which was irritating for all concerned. God knows what they were up to in there - summoning dread Cthulhu?
Huntings wouldn't even let me in the main building and Hanslope Park I was escorted (its much nicer than its description in the laundry files)