I'm not sure if this qualifies as it came from a website and YouTube channel [1] whose author created neologisms for emotions that do not have a descriptive term, but the word "kenopsia" [2] might fit. I stumbled across this website while browsing a reddit thread about visiting your school at night [3].
[1] https://www.dictionaryofobscuresorrows.com
[2] https://www.dictionaryofobscuresorrows.com/post/27720773573/...
[3] https://old.reddit.com/r/nostalgia/comments/a5ljsp/that_weir...
Wait, people think malls are "treasured social institutions" ? I think it's just neat to look at creepy old malls that used to be full of people. I wonder if there's a name for that? Like the thrill of sneaking into school at night when no one was there.