If you wish to drive in Paris, remember that only one rule is applied when it comes to priority – priority from the right. There are of course some red lights here and there, but not on e.g. Place Charles de Gaulle (l’Etoile). No “normal” round-about priority here, only priority from the right.
There should normally be one single stop sign in Paris, far away from the centre - on the Seine banks - an exit from a place where construction material is stored and handled, Quai Saint-Exupéry. When I went there a couple of days ago, the stop sign was gone – by purpose, stolen…? (On the Google Earth picture, the stop sigh can still be seen.)