Being There

Finding Paths through the World's Photos
OK the write-up is a little obscure or esoteric or... just dang hard to follow, but the video is way cool.

University of Washington researchers along with help from Mcrosoft have developed a system that combines Image-based rendering (IBR) and navigation. Bottom line -- a bunch of folks take a bunch of pictures and then they are combined to make an interactive & navigable "you are there" photo experience.

More information at their site on Photo Tourism