| Jacques Hittorff - Senior Architect | The construction was completed in 1849. |
| Jean-Baptiste Guenepin - Initial architect | Designs the first plans. |
| Pierre-Victor Calliat - Interior decorator | Works between 1866 and 1870. |
| Henri Martin - Post-impressionist painter | Author of the canvases of the staircase. |
| Wermare - Sculptor | Realized Marianne's bust. |
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