I spent one afternoon in Paris. Took the Metro from the Grand Arch (La Defense) to Hotel du Ville, walked to the Pompidou, had a great time there, enjoying much interesting art and snorting in disbelief at other, more absurd pieces (like three big canvasses of white, nothing but white). Then walked over to the Louvre, checked out Mona Lisa (a bit disappointing - too much security), ignored the crucifixions and portraits of dead people, and found some amazing "Islamic Art" from centuries past. Enjoy!
(See if you can figure out which art is from the Louvre and which from Pompidou.)