In this converted train station, you can give your child a quickie course in the amazing transition from classical art (which you've just seen, across the street in the Louvre) to the modern age.
And don't forget: like all art museums in Pars, the Musee d'Orsay is free for kids under age 18. Visitors can check bags for free as well. (Verify current visitor details at the Musee d'Orsay site.)
