Oh yes, the Musee D'Orsay will blow your mind! Especially the Impressionism Room with the Monets, Manets, Renoir, Degas, and Gauguin.
If you have an afternoon in Paris... GO HERE!
Of course, you can't sneak any pictures inside... no snapping at Van Gogh's self portrait or sleeping under his haystacks...
But you can wander and watch and feel alive. It is a magical walk inside full of so many wonderful works of art that you basically feel your blood surge and your brain explode.
Okay... maybe your brain doesn't really explode... but that's what the cafe is for... trying to find a seat upstairs. That will really stir your emotions.
You can catch your breath outside with the statues that sit and guard the comings and goings.
And then you're off again, back on the underground in the underbelly of the city, waiting to be vomited back up toward some kind of amazing inspiration that is Paris.