It's unfortunate there's not more left of this grand arena. You can see the scale of the place and walk in the path of the old chariot "racetrack". But, as many reviewers have noted, it's mostly an empty field with some ruins reclamation at one end. You have to use a little imagination and remember Ben Hur to visualize the arena and a hundred thousand people in seats around the track. Also, the wealthy watched from their porticos on the hill overlooking Circus Maximus. It's still worth checking off your must-see list, in my opinion, if for nothing else than its reputation.