Perhaps your heart beat a little faster when the hostess made this announcement, because it meant you were arriving in Paris for the first time, with a feeling of excitement about what might lie ahead. At the airport (either Orly or Roissy-Charles de Gaulle) you took the bus which has left you at the Invalids or the Porte Maillot terminal. Here you have to decide how to get to your hotel: by taxi or on Paris’s underground railways, the Metro?