Did You Know? The Roman Colosseum was originally clad entirely in marble. When looking at the Colosseum today you’ll notice the stone exterior appears to be covered in pockmarks all across its surface. The reason for the pockmarks is, after the fall of Rome, the city was looted and pillaged by the Goths. They took all of the marble from the Colosseum and stripped it down to the bare stone setting. The holes left in the stone are from where the iron clamps and poles attaching the marble cladding to it have been ripped out.