This was one of my 8mm fisheye shots i took a few weeks ago while in Rome. The cross in the Colosseum is for the rememberance of the Christians that died in the arena. The Roman Emperors sat where the cross is now placed.
I combined two shots with differing exposures to allow the sky to show through. Then brushed in a third layer to add a little more of the texture to the cross and rest of the foreground.