National Geographic is partnering with Microsoft Live Labs to create rich three-dimensional spaces of global landmarks such as Machu Picchu, Stonehenge, and the Parthenon. The program takes a large collection of photos (of a place or an object), analyzes them for similarities, and stitches them together for a more immersive experience. Click on the map below to see what we have started and submit your own photos to synths in progress. (You must download the Photosynth software in order to view synths.)