Atlanta Time Machine is a fantastic website by history buff Gary Germani. After finding a treasure trove of old photographs of the city at the Georgia State University Library, Gary set out to take photos of the exact same location to give a neat "then and now" comparison for things that have (or have not) changed.

This one is the statue of Henry W. Grady, an influential editor of the Atlanta Constitution newspaper in the 1880s (left: postcard from 1951, right: 2005).

Link - Thanks Joe!