There's museum appeal (preserved history) and exploration appeal (unravelling a complex system from inside of it, or trying to) and a sort of monument appeal (marvelling at the amount of human energy put into something).

Those put me into a reflective mindset.

I should have guessed that there would be security. That makes it more of a project than I'd take on right now, but I'm glad that other people have photodocumented it so I can marvel at it from afar.