Digichromatography: Restoring Prokudin-Gorskii's Photographs: 100 year old Color Photographs
According to the site:
"Born in St. Petersburg and educated as a chemist, Prokudin-Gorskii devoted his career to the advancement of photography. In the early 1900s, he developed an ingenious technique of taking colour photographs. The same object was captured in black and white on glass plate negatives, using red, green and blue filters. He then presented these images in colour in slide lectures using a light-projection system involving the same three filters."
These beautiful images have a strange effect: we are so used to seeing old B&W photos that we envision the world they depict in those sepia or grey tones. To see the same age in vibrant color makes it, in some ways, less realistic--my reaction is that this must be a modern reproduction/reenactment. But then when you really look at the images and look for the details--amazing. Even the digital reproductions found at this site are wonderful.