Musee d'Orsay

Located in Paris,  this museum contains mostly French art dated 1848 - 1914.  It holds the largest collection of Impressionist and Post-Impressionist masterpieces in the world.  Represented are works by Monet, Manet, Degas, Renoir, Cezanne, Seurat, Gauguin, and Van Gogh.  It is one of the largest museums in Europe.