Microsoft's Photosynth creates a 3D scene from photos, which anyone can then view and move around in. I made this one, which allows you to take a virtual tour of the artwork hanging in The Cupcake Lab of Saratoga Springs, NY.
You might be asked to download a plugin. It should only take a sec.
Personally, I find Photosynth to be brilliant. Some confused people have told me that it makes them nauseous. It is an experiment... what do you think?