In addition to the 'most famous places in France' it is interesting to see which places are top by number of visitors - the most visited places in France.
Surprisingly the two lists are not the same, although certain key Paris landmarks appear on both lists. Theme Parks play a much larger role in the list of 'top places in France' when judged by visitor numbers. The top places to see when judged by numbers of visitors are:
Disneyland Paris - theme park
See Disneyland for details
Various sights in Paris
Monuments in Paris hold several of the top positions for the most visited places in France. These are the Museum of the Louvre, the Eiffel Tower, the Georges Pompidou Centre, the Cité des Sciences de la Villette (a new park / museum / exhibition centre), the Orsay Museum (the museum of modern art) and the Arc de Triomphe.
See Paris Travel Guide for details
Palace de Versailles
see Versailles Palace for details
Parc Asterix - theme park near Paris
See Parc Asterix for details
Futuroscope - theme park near Poitiers
See Futuroscope for details
Le Puy de Fou - theme park, Vendée, best known for the impressive battle and historic re-enactments held each day
Museum of the army - military museum, Les Invalides, Paris
Abbey at Mont-Saint-Michel
Don't forget, this list is according to visitor numbers - see also a list of the 'most famous places in France'