The "view" through a window at Tower Automotive on Sterling Rd. The window was covered in so much grime that "filth trees" started growing up from the bottom.
On a completely unrelated note: One of my favourite photography websites is shorpy.com, "a vintage photography blog featuring thousands of high-definition images from the 1850s to 1950s." This week they featured a wonderful street scene pic from New York City, 1905. There's so much going on this this photo: Dead horse laying in the brick street, filthy barefoot kids paying in the gutter water, the poses and expressions on the faces of the kids, etc. Fantastic. Make sure you look at the high-def version.