| Impératrice Eugénie - Initial sponsor | Woman of Napoleon III, first owner. |
| Baron Maurice de Hirsch - Owner and patron | Bavarian financier, hotel processor. |
| Hector-Martin Lefuel - Architect | Designer of the hotel for Eugénie. |
| Léon Châtenay - Architect | Head of enlargements for Hirsch. |
| Émile Pereire - Former landowner | Selled the land to the Empress in 1861. |
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