Arc de Triomphe, one of our favorite places to sit, relax, eat and/or people-watch. There are no stop lights in the circle and it was mesmerizing at times to watch how well cars would zoom in and out of the circle without colliding.  We found out later in the trip that to get across to the Arc, you have to go down an unmarked tunnel and walk over to it underground.  The monument has almost 300 steps to the top. If you look closely, you can see some people standing on the top, upper left.  Crazy people.......... Wouldn't get me up there.