i agree with someone above who suggested notre dame, it is really a rather moving experience. it's completely beautiful. i would also recommend musee d'orsay above the louvre, depending on what kind/whether or not you even enjoy art. the mona lisa is of course, the thing the louvre is most famous for because of the da vinci code, but it is wholly underwhelming. musee d'orsay however, has many of the impressionists and toulouse lautrec <333 and many, many others. it is fantastic. oh gosh i do love paris! have a fantastic time<3 also! montmatre! for the sacre coeur and the moulin rouge and the street markets, oh!