The NY Public Library Labs has released a website, the Stereogranimator, where you can see and create 3D animated gifs out of old pictures from their archive. As they explain on their website, many of the 19th century pictures were taken with almost identical copies, which were meant to be seen together each side lending the other a sense of depth that a photograph alone cannot possess.
The experiment is quite interesting, you can get to create your own 3D animated gifs using the many pictures in their archive and manipulating different variants to get diverse results or just take a look at their gallery. Besides the fun aspect of the gifs, it's also pretty cool to see old pictures and what life was like so long ago (2 centuries already!). Go give it a try!