Check out the largest photo ever taken of Tokyo, a 600,000 pixel-wide, 360-degree view of downtown, taken from the roof of Tokyo Tower’s lower observatory. Comprised of more than 8,000 individual photos, the full collection took two days to shoot and was nearly impossible to compile.
“I also needed more than 1.5 terabytes of free disk space to use as the “scratch disk” while doing the final assembly and retouching of the image. The computer I was using had 192GB of RAM, and still lots of stuff was fairly unresponsive.”
(The Full 360-degree Panorama: http://360gigapixels.com/tokyo-tower-panorama-photo/?v=-168.1,0.4,1)