The show is mesmerizing. Once a year, the backdoors of the Palais Garnier stage are opened onto the Foyer de la Danse, a large golden room, framed by columns and presided over by a magnificent chandelier that personifies the spirit of this theater, inaugurated January 5, 1875. The Foyer was then the setting for discreet rendezvous between opera patrons and dancers. It is still used as a daily rehearsal and warm-up room. Intimate and secretive, the space, though sumptuous, is concealed from the public eye. Except for one evening per year: the annual Dance Gala, an exclusive fundraising soirée presented by the Paris Opera and AROP (Association pour le Rayonnement de l’Opéra de Paris).