I rode those subways in the early 80s (as I'm sure some others here did), and it's true, they were filthy and stinky and fucked up, but I don't know if they were any more dangerous than the rest of the city above ground...
Last night the family went to the open house for my eldest's high school for next year. Apparently Zoe Strauss does the art. She's wound up & awesome. It was very cool to finally meet her. Love her work. http://www.zoestrauss.com/
In January I fond a Canon DSLR that my sister bought and never used. For two weeks I was taking photography's 5-6 hours a day learning the triangle, just stuff I saw around the house. It only lasted two weeks, I'm learning watercolor painting. I planned on keep this going, but... planning was never for me, I'm impulsive. This are the pictures I've taken.
all the empty buildings, factories etc. after they had their use. Abandoned America. I'm sure Matthew Christopher will have lots to photograph when he can get out a little more. When I see construction & it's something like a new strip mall in the suburbs I refer to it as building ghosts. Even if the buildings remain standing, their use and/or need seems to disappear into the mist quickly. https://www.abandonedamerica.us/