Last week we showed you David Bergman's Gigapan image of North Greenwich Arena (home of the Olympic gymnastics meets). That image was roughly 1.7 billion pixels! Two days ago, David released his newest Gigapan image of Horse Guards Parade that contains 200 stitched images totaling an incredible 3.1 billion pixels. It's amazing to zoom in and see so much detail both in the audience as well as on the field. What interesting things can you find in this image?