Rome's iconic colosseum is set to hold gladiator fights for the first time in about 1,600 years, thanks to a partnership with Airbnb. To celebrate the release of the upcoming Gladiator II movie, Airbnb will randomly select a lucky few to tour the Colosseum on May 7 and 8 next year for a once-in-a-lifetime experience, following in the footsteps of the gladiators of old.