Greg Germani has been recreating old Atlanta-area photographs since 2003. He's even duplicated aerial photos! From a 2005 article:
He stands exactly where the original photographers once stood, and trains his 3.2 megapixel Nikon digital point-and-shoot in precisely the same direction. Today, he has taken more than 400 pictures that way. Pairing each photo with its antecedent, he posts them on his website, www.atlantatimemachine.com.
The pictures comprise a remarkable look at how much Atlanta has changed in the past half-century. The Atlanta Crackers' old outfield is now a Borders parking lot. An old gentleman's club is now a MARTA station. And downtown, which was once the entertainment and social center of the city, is now a ghost town on nights and weekends. [Link]