Some of the sights of Paris, rank-ordered according to the author's personal preferences:
Musée d'Orsay: Monet, Renoir, Van Gogh, all in exquisite and comfortable settings.
Île Saint-Louis: This little island neighborhood seems right out of a romantic French movie.
Latin Quarter: shopping, browsing, clubbing, browsing, shopping, clubbing. Repeat.
Notre Dame Cathedral: begun in 1160, plundered in 1790, still amazing in 2010.
Eiffel Tower: Is there a more romantic attraction in the world? You know, if you like that kind of stuff.