Mysterious Wallpaper Demystified

When I got the above wallpaper on my MacBook Pro, many people were actually curious of which city this picture is taken in. Well, I finally got down to search for its origin and here it is:

Taken from the Sears Tower in Chicago, looking out West in the afternoon.

Titled Heading West by VersonPhoto, this wallpaper is taken off InterfaceLIFT.com, a great resource for superb looking wallpapers, icons and themes.