See the Big Picture

American artist Jorge Rodriguez-Gerada had an idea for a really big portrait. So he got a GPS system, a crew of volunteers, 2,000 tons of dirt, 2,000 tons of sand and some assorted large amounts of grass, stones, and string, and created an 11-acre picture from a photo. It's so big that it has to be seen from the air.

Of course, the developing time was about 18 months, which may make this an impractical sort of thing to do on a regular basis.