The perpetual adolescent in me — that feral young man fascinated by all manner of ruination — is completely smitten with Detroit City. That place is like Winnipeg, only much, much more so. If I could be guaranteed a modest degree of safety I'd love to spend a week or two walking its streets.
Failing that, there is this photo essay by Witold Rybczynski. If there were a 200-page coffee table book with this material, I'd buy it.