Orsay interior ground floor.
Previously a railway station, the Musée d'Orsay was saved from demolition and turned into one of the Paris' finest museums. It is now home for a superb collection of Impressionist and Post-Impressionist paintings. Most travellers come to see the masterpieces by Degas, Gauguin, Van Gogh, Monet and Renoir among others, though these top floor rooms are a bit cramped. More.
The Left Bank's famous Seine-side second-hand booksellers.
And more formal bookshops.
Good value street dining between the river and St Germain.
The Left Bank towards Blvd. St Germain is also notable for jazz music, clubs and street.
But it's not all down-market intellectual on the left bank! Boulevard Saint Germain does posh! Next, Centre Georges Pompidou.
Official Musée Orsay site