Things to do in Paris | Cite des Sciences and de l'Industrie | The Metropolitan | Musee de l'Erotisme and Pigalle | Musee D'Orsay
The Palace of Versailles | Pere-Lachaise Cemetery | Sacre-Coeur and Montmartre | Saint-Ouen Flea Market

Look at a copy of the map of The M é tro (Paris's underground train network), which can be obtained free from any M é tro station, and you will see it looks totally different from London's 'circuit board' tube map. It it also run slightly differently by the RATP, the Regie Autonome des Transports Parisiens , which is the Parisian transport authority.