There are a tremendous amount of attractions to visit and things to see and do in Paris, the list is almost endless. The best suggestion would be to try to do a little preparation before you go, and be selective about visits to monuments and museums, if you try to explore too many you can become a little overwhelmed. Choose a few of your favourites, depending upon the amount of time you will have, and then allow time to wander at leisure, stop for a coffee or an aperitif, people-watch and soak up the Parisian ambience.