Thanks to a thread on another site, I came across these interesting photos from Japan.
http://www.gunkanjima.ne2.jp/ - site's mainly in Japanese, but click on the Gallery menu to see the images.
http://www.ne.jp/asahi/saiga/yuji/gallary/gunsu/thumbnail.html - some really atmospheric black and white images from an abandoned coal mine on a man made island (more details here - http://www.ne.jp/asahi/saiga/yuji/menu/menu-e.html).
http://www14.big.or.jp/~kawamura/m-city/english_photo_gallery.html - yet more from Gunkanjima.
Thought these might be of interest to others.