“The Old New World” photo-based animation shows you what it must have been like to walk around some U.S. cities in the early 20th century (I think I recognize NYC, Boston, Washington, anyway). Yes, I was right on those. You can find the other cities pictured here.
They say they got their source photos from Shorpy Historic Picture Archive.
This video reminds me a little of the ending credits from the first Sherlock Holmes movie with Robert Downey, Jr. and Jude Law, from 2009:
Apparently, this is how they did it. Or one way to do it: