XIR210331 Levelling of buildings for the creation of the Avenue de l\'Opera, 1864-79 by Buhot, Felix Hilaire (1847-98); Musee de la Ville de Paris, Musee Carnavalet, Paris, France; (add.info.: The Avenue de l\'Op矇ra was created from 1864 to 1879 as part of Haussmann\'s renovation of Paris: the demolition required for its construction cleared the area between the Louvre and the grand boulevards, which had been occupied by a slum district, dense with poor-quality housing and numerous narrow street. urban regeneration by Baron Georges Eugene Haussmann (1809-91);); French, out of copyright.