The largest photograph ever printed?
A seamless photograph measuring 34m x 10m (111ft x 32ft) was printed in 2006 onto the massive sheet of white fabric which had been covered in 90 litres (20 gallons) of light-sensitive emulsion. The pinhole camera was a jet aeroplane hangar and took 35 minutes to expose the picture of a US Marine Corps airfield in California.
Back to some random facts about photographing things . . .