Probably one of my favorite european cities. It’s difficult to decide which arrondissement (quartier) in Paris is the best, but speaking for myself, I already found it. The best way to discover Paris is by a combination of bike rental and the Metro (subway). By bike, you really get a different view of the city. Never forget the Seine banks. Walk through narrow streets, take a boat, rest on the bridges, cafés and in restaurants. Enjoy awesome french food, wine and coffee. Never ever go out without your camera.
The list of sights in Paris is endless. You need days to see only some of them. I mostly prefer to visit unknown sites in Paris. Of course it’s easy to say this after five stops in Paris.
The chief danger about Paris is that it is such a strong stimulant. – T.S. Eliot
Free yourself from the mostly obligatory Eiffel tower or Louvre visit. Perhaps you could have more joy by visiting the Canal St. Martin, Catacombs of Paris or the Pont de Bir-Hakeim.