The French Academy, which sits on the Left Bank facing the Pont des Arts (pedestrian-only) bridge, is the place where academicians regularly gather and discuss, believe it or not, the French language—grammar, spelling, and literature. The Academy was founded in 1635 by Cardinal Richelieu under the reign of Louis XIII and is the official authority on the French language. It is charged with publishing the French dictionary (they’re currently working on the 9th edition) and approving any new words entered into it. However, since their recommendations carry no legal power, even the government—sometimes—disregards their rulings.
Forty members, or immortals, make up the Academy—there’s a complicated procedure for being appointed plus an official uniform—and they serve for life (unless dismissed because of grave misconduct). Over the centuries, twenty members have been expelled: one for theft and others for their association with the Vichy regime during WWII. Famous and notable members have included Voltaire, Victor Hugo, Louis Pasteur, Dumas, and Valery Giscard d’Estaing (a former French president, the only one still living). Of the 708 total immortals since 1635, only four have been women.
Since it regards its mission to “protect” the purity of the beautiful French language and tries to prevent adopting American words (like "computer" or "walkman"), there is NO choice to see the website (www.academie-francaise.fr/) in English, of course.
The building in which the Academie francaise (one of five academies) is located is called the Institute of France. It used to be a boarding school for boys set up by Cardinal Mazarin, the man mentored by Cardinal Richelieu. He became the Prime Minister of France upon Richelieu’s death and essentially ruled France behind the scenes when the child, Louis XIV, succeeded his father (King Louis XIII) to the throne.
PS - A note about the Pont des Arts (bridge). It is a gathering point for tourists and locals alike, especially the younger, hipper, university-age set. It's a great place to have a picnic (with wine, bien sur), listen to some young guitarist busking for a few euros, or watch the twinkling lights of the Eiffel Tower for the first ten minutes of each hour through the evening.