I came across some photos on Flickr (thanks to a posting on Boing Boing) of an abandoned Detroit book depository. Only it wasn't abandoned empty. It is full of materials! I'm not quite sure what happened, what the course of events was, but there's evidence of fire, and it's gotten to the point where mushrooms and even trees are growing in the piles of decaying books. Go here to see the photos, and here to read a blog posting by the guy who took them. It's really frustrating to think of all those books gone to waste.