The transport network is highly developed in Paris. There are bus, tram, train, metro and even bicycle everywhere in Paris but also in the Paris suburbs.
You can easily access the most famous districts of Paris: Champs-Elysées, Montmartre, Quartier Latin or Champ de Mars and its Eiffel Tower.
For original walks, you can try a hop on hop off tour of Paris or a 2CV tour. The Batobus boat allows you to board from different places in the center of Paris.