I've been in a Sears back room! They look a lot like this if you empty them out.Some of the more nerdy foos I know tell me it's actually a Sears back room. Take what I'm saying as a grain of salt though cause they could obviously be wrong.
This is an analysis someone did of the image, potentially linking a later anon to the person who posted the image initially. So, it might be an emptied out office complex.