Is this new? I think that my Lonely Planet guide book from 2000 already lists the long name.

get the museum pass & split up your louvre visit. I went twice doing three hours total.saw egytian/medieval/italian painting & roman sculptures. around noon a lot of the tourists around me looked completely worn out and wishing they were back in their hotel.
Sam

You can't pick just three, as you can see from the above posts.

The advice you have gotten is excellent.

I'll pick my three (or more) favorite things to see in Paris museums instead:

The Unicorn Tapestries, in Cluny. The best medieval tapestries you will ever see.

The collection of ethnological art (previously would be called art from primitive cultures, but the art is NOT primitive) at the Louvre. It's downstairs and then upstairs at the Lion's Gate, is hard to find unless you look for it, and has the most amazing examples of art from Polynesian areas, New Guinea, Africa, American Indian, South American, and so forth. There is even an Easter Island head! When your eyes cannot take another European masterpiece, these rooms will amaze and delight you.

The Rodin Museum, inside and out.

The goat sculpture in the Picasso Museum.

That's four, and that's enough.

oh, I realized I made a confusing finger slip and I meant MUSIC Museum (not musem museum -- now that would be a good one, a museum about museums).

That is a special interest one, of course, but you didn't just say art museums.