All photos from Forgotten Detroit.
Lots of haunting images on flickr, too; search for “urbex” (for “urban exploration” ya see): http://www.flickr.com/search/?q=urbex&ss=2&ct=6&s=int
or similar: http://www.flickr.com/search/?s=int&ss=2&ct=6&w=all&q=urbex+detroit+abandoned&m=text
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zunguzungu 
Lots of haunting images on flickr, too; search for “urbex” (for “urban exploration” ya see): http://www.flickr.com/search/?q=urbex&ss=2&ct=6&s=int
or similar: http://www.flickr.com/search/?s=int&ss=2&ct=6&w=all&q=urbex+detroit+abandoned&m=text