http://www.muralmosaic.com/Cochrane.html
i guess it was originally painted and then panels were taken apart for artists to paint individually and then reassembled back. when you click on each mosaic tile it will show in detail each one. some even show what the original tile was painted as.
check out the mosaic tile of the horse's eye, of the cowboy's nose and mouth, actually all the tiles in the cowboys face are incredible... i haven't had a chance to click on all the tiles yet, i'm sure i'll find more awesome ones... i can just imagine how this must look in person!
Thanks for writing this.