Located on rue du Faubourg Saint-Jacques, in the 14th district of Paris, the Hotel de Massa is a former 18th century mansion originally located on the Avenue des Champs-Elysées. In 1929, he was transferred to a park detached from the gardens of the Observatory.
Neoclassical style, it was built in 1777 by Jean-Baptiste Le Boursier. Today classified as a Historical Monument, it now houses the Société des Gens de Lettres and the European Conservatory of Audiovisual Writing.