| Jacques-Ignace Hittorff - Chief Architect | Manufacturer of fountains and redevelopment. |
| Louis-Philippe Ier - King of France | Decide on the erection of the obelisk. |
| Apollinaire Lebas - Marine Engineer | Directs the installation of the obelisk. |
| Jean-François-Théodore Gechter - Sculptor | Author of statues for fountains. |
| Préfet Rambuteau - Prefect of Paris | Inaugurate fountains in 1840. |