I came across this amazing example of accidental science art yesterday in a shopping center parking lot in northern Virginia. After I tweeted a cell phone picture of the full sequence of cell division – it’s even in the right order, as you can see from the bottom photo – someone directed me to this excellent post by Malcolm Campbell on the science of oil rainbows.
The Finch and Pea 
The bottom one looks like the surface of another planet!
The artist Chuck Close did a series of macro photos of the asphalt surfaces of streets and parking lots.
Just shows the value of staying alert to even the apparently mundane. You can never tell when you might find something amazing.