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Actually, I love doing that sort of thing - for all the reasons you describe and because it's fascinating. Access (and egress) is the main factor for me, I need to be able to walk in 😁

Many are walk-ins, many more are climbing through a window, pulling a loose sheet of metal back and sliding through, or scaling/jumping a small wall.

There will be places accessible to you, don't go alone (I do sometimes).

don't go alone

I'm too much of a scaredy cat!