Photosynth takes a large collection of photos of a place or object, analyzes them for similarities, and displays them in a reconstructed 3-Dimensional space. With Photosynth you can:

• walk or fly through a scene to see photos from any angle;
• seamlessly zoom in or out of a photograph even if it's gigapixels in size;
• see where pictures were taken in relation to one another;
• find similar photos to the one you’re currently viewing;
• explore a custom tour or see where you’ve been; or
• send a collection to a friend.

check it out..