Iconic street, and decorated in French flags (perhaps for Bastille Day). Arc was a must see, as was the Louvre at the other end. But walking the distance brings you through many other wonderful sights as well. You can also take the metro from the Arc to the Louvre in about 10 minutes, though I regrettably spent ten minutes trying to get to the street from the Carousel under the Louvre. A trip to Paris without visiting this promenade is just silly.