Hôtel Emile-Justin Menier, Private mansion in 8th arrondissement of Paris, France

The Hôtel Emile-Justin Menier is a three-storey Second Empire private mansion set perpendicular to Avenue Van-Dyck, with its main facade facing Parc Monceau and a west return wing. A rounded avant-corps rises at the centre of each facade, its carved decoration by Jules Dalou for Eugène-Pierre Lefebvre's workshop. A winter garden occupies the north-east corner, visible from the park, and a vaulted entrance in the cour d'honneur leads to the covered courtyard of the former stables.

Built in 1869-1870 by architect Henri Parent for chocolate manufacturer Emile-Justin Menier, the mansion was inaugurated in 1874 with a reception and ball at which guests wandered the house as if in a museum. Menier hosted an annual ball there, including one on 14 March 1880 attended by more than two thousand people. After his death in 1881 and his wife's in 1895, large crowds attended their funerals.

The mansion's name comes from chocolatier Émile-Justin Menier, who had it built and hosted an annual ball there; on 14 March 1880 more than two thousand guests attended. Émile Zola noted in his Carnets d'enquêtes that he used the house as a model for the townhouse in La Curée (1871), and Philippe Hériat later drew on it for La Famille Boussardel (1944).

The house stands on Avenue Van-Dyck next to Parc Monceau and can be viewed from the sidewalk. The facade is clearly visible from the street and gives visitors a good look at the ornate decoration without access to the interior.

The building came close to being demolished but received protected status in 1971, saving it from destruction. This preservation allows visitors to see one of the fine examples of 19th-century Paris architecture.