Rome Mayor Mistakes Another Arena For Colosseum, Sent To Lions - thumbs down for their mayor. Yes, online commentators (and no doubt offline elders around the Italian capital) are sending Mayor Virginia Raggi to the proverbial lions for mixing up the Colosseum — the one (and only) built in Rome nearly 2,000 years ago that's the first and biggest open-air amphitheater ever built — with some other, smaller ancient arena in a much smaller city almost not worth mentioning by name. But alas... In a video presentation this week to tout the Italian capital's selection as host of the 2023 Ryder Cup golf tournament, Raggi showed a footage of what was supposed to be Rome's signature landmark… but was instead the arena of Nimes in southern France.