Microsoft have released a tech preview of Photosynth – an application that takes a number of photos, analyses them for similarities and displays them in a virtual 3D space. If you want to move around freely in the virtual space, follow these instructions.
OK, so the downside. The tech preview only works on Windows XP SP2 and Windows Vista RC1 and requires IE6 or IE7. Oh, and you need a graphics card that supports DirectX 9, has a WDDM driver, at least 128Mb of memory and suports 32 bits per pixel. And the installation is via an ActiveX control. For the rest of us, there’s a couple of videos to watch.