Microsoft rolled out Photosynth, this application allows you to turn a collection of photos into a 3D world in which you can walk around.
You can share or relive a vacation destination or explore a distant museum or landmark. With nothing more than a digital camera and some inspiration, you can use Photosynth to transform regular digital photos into a three-dimensional, 360-degree experience. Anybody who sees your synth is put right in your shoes, sharing in your experience, with detail, clarity and scope impossible to achieve in conventional photos or videos.
I tested this application a day ago and it was pretty impressive but while I was writing this article Microsoft's servers were completely jammed. Here's a Photosynth of Stonehenge but you can't really see much as it took the program forever to render the image:
You can give Photosynth a try by downloading the plugin over here. You can then create your own Photosynths or check out some nice examples like the ones over at the National Geographic channel.