The ancient Roman Colosseum will get a new gladiator floor, which will give visitors a chance to see what spectators saw when gladiators did battle there. Architects in the early 19th century had the floor removed to get a clear view of the underground passageways under the Colosseum. The grand stadium opened about 2,000 years ago in 80 A.D. Italy announced plans to restore the floor to the Colosseum to ...