This guy has been posting his work on Flickr like a madman. I posted a few back on June 30. He currently has well over 400 images posted. Many are sketches, even an occasional map, but all are pretty amazing. You really must click on these images to see them larger, especially the detail shot, to get an idea of the intricacy of his work. Keep in mind the size of these pieces too. The last one is only 10 centimeters across!
"The Castle" 80x60cm 2007
"The Castle" detail
"The Gate" 14x9cm 2009
"The Old Factory" 7.5x10cm 2009