What if you looked at a photo under a microscope and discovered a world of photos inside that one?

That's the idea behind the Infinite Photograph, a giant mosaic composed of some 300,000 photos submitted to National Geographic's My Shot program.  You click on the first image, then go deeper and deeper into the mosaic, and find mosaics within mosaics.  Curiouser and curiouser.

Here's a video that shows how it works.

From the Upcoming ueue, submitted by Marilyn Terrell.