March 11th, 2013
A really nice source of abandoned place imagery is Wikimedia Commons. If you do key word searches there on "abandoned" followed by pretty much anything else you will get good results. A lot of the images are free of copyright and royalty issues as well, provided you attribute them properly. Nice place to browse. That's an example of what you might find above, an abandoned building in Finland by Mikko J. Putkonen.