The site of the Invalides Esplanade (7th arrondissement), a vestige from the 1900 World’s Fair, is owned by the City of Paris and in part by the SNCF (French railways). The site is composed of a building and a basement level. The Invalides terminal extends over 3,800 m2 distributed over three levels (a basement, a ground floor and one story). Today, it is chiefly occupied by Air France. The subterranean section, located partially under the esplanade, between the rue Fabert and the Invalides terminal, extends over nearly 18,000 m2. Certain municipal activities and some SNCF equipment will remain on the site out of necessity.