Photosynth is an hexperimental photo mangler from Microsoft's Live Labs (who came up with Surface and the like).  It takes a bunch of photos and stitches them into a 3D virtual cardstack kinda of thing - hard to describe, obvious once you see it, so take a look at the site.  It's free, you'll need a Windows Live login and there's a small download to install, after which it's a browser experience.

Here's my Croyde KAP photos loaded into a synth.  It's done a remarkable job of tying together the pictures into something like a space, and I think it feels genuinely vertiginous.