The Orsay Museum was originally designed as a train station in 1900. By the 1950’s it became apparent that the platforms were too short for modern trains and the building became home to a theatre.
In the 1970's it was remodelled and converted into a museum dedicated to displaying art from the period 1848 to 1915. There are many masterpieces at the Orsay include work by Delacroix, Manet, Guaguin, Cézanne, Monet, Renoir, Sisley, van Gogh and many more great artists.
Source: ParisPass.com