 The most emailed photo on Yahoo right now is a photo of what people are calling the Virgin Mary under a bridge in Chicago. According to the caption for the photo police say it was probably caused by road salt which dripped from the roadway above onto the wall. If you've ever driven under an underpass you've probably seen seepage stains on the cement walls under the underpass as well. Apparently the ability to see "faces" and such in clouds (and in salt crystals on walls) is called Pareidolia and you can find out more about it here.
See the full size photo of what looks like the Virgin Mary to some. Source: Yahoo | 
