Tourists gather at the edge of the Etoile ('Star') as the junction is known.
Contrary to normal roundabout rules, at the Arc de Triomphe traffic entering the system has priority, which means that traffic on the roundabout must give way to cars moving in from their right. French car insurance policies come in two types -- those that specifically exclude the Arc de Triomphe roundabout and those that include it. The latter are all on the basis of no blame equal share payouts.
Dignitaries being whisked to lunch in big luxury Citroens with a Republican Guard motorcycle escort through the roundabout. We encountered them a bit later at a fancy hotel restaurant, but we chose to have lunch around the corner in rue Miromesnil.
In addition to exclaiming at the courage of cyclists serenely pedalling through the chaos, gasping at the foolhardiness of ducking and diving scooter riders and being thankful that it isn't you out there, you can watch the gypsy woman working the gold ring scam or the young Australian musicians in crazy costumes making a video for their latest single.