The Proper People
https://theproperpeople.com/
Urban exploration but with a haunted atmosphere. The music that accompanies their videos gives these abandoned locations a real feeling of cognitive dissonance, like nightmares out of context.
Flavor: urbex
Opacity
https://opacity.us/
Urban exploration photography by Tom Kirsch. I have visited Opacity since I was a teenager in the early millennium. There is something about these photos of abandoned sites that just haunts me… And apparently many others.