Rue de Rivoli might be one of the prettiest streets in the world, or at least, one of my favourites. You'll pass by the Louvre, the Tuilleries, Place de la Concorde, designer shops, lovely bookstores, Angelina Tea Room (stop for some hot chocolate, please!), somewhat tacky gift shops, while admiring the architecture that screams "PARIS" all the way through. If you want to see the Paris that is shown in the movies, only the Eiffel Tower beats Rue de Rivoli.