Rotting textbook warehouse in Detroit
Link (via Making Light)
This is inside the building right next to the Michigan Central Station. Apparently at one time it was a post office, and then it was used by the Detroit Public schools to store textbooks and materials. The columns in here are particularly beautiful. I think I read somewhere that the building was designed by Albert Kahn, but I haven't been able to verify that.
All those metal bars once supported pallets where all those papers and books were stored. This is the state I found it in.