Late last year, I came across a reddit community called r/LiminalSpaces that showed subtly disquieting photos of deserted urban spaces.
A liminal space refers to eerie spaces that that feel "off" because they show places that should have many people that are deserted, seem particularly lonely or isolated, or because you don't know where it is or what time it is.
This is the best definition I could find. (It seems to be related to the academic concept of liminality).
When I stumble on a page in a software manual that describes something cryptic with no context, it's frustrating but also reminds me of these photos.