The Hotel de Salm was originally built in 1782-88 by architect Pierre Rousseau for the prince of Salm-Kyrburg. It has been the headquarters of the Legion of Honour since 1804. The current building is a replica of the original, which was destroyed in a fire during the Paris Commune in 1871. The complex had been expanded in 1866-70 and again in 1922-25.
The entrance to the courtyard is a triumphal arch within a screen of Ionic columns. It is very similar to an unexecuted design by Marie-Joseph Peyre, which was presented in 1763 for the Hotel de Condé. The prince of Condé later moved to the Palais-Bourbon and his old residence was replaced with a theatre for the Comedie-Francaise. This theatre has been known since 1797 as Theatre de l'Odeon.
Incidentally, the Scottish architect Robert Adam had previously used a screen of columns for the London Admiralty in 1759.
The courtyard is thought to be inspired by Jacques Gondoin's School of Surgery from 1769-74. The portico has six Corinthian columns that fronts a relatively bare wall. It is decorated above the door with a frieze of garlands and a relief by Jean Guillaume Moitte depicting the Roman Festival of Pales, or Parilia.
The former garden front overlooks the river and features a domed rotunda, capped with statues of Olympian gods and goddesses by Jean Guillaume Moitte. Rousseau also hired his brother-in-law Philippe-Laurent Roland, who designed the low relief on the pavilions of the entrance front on Rue de Lille. Both sculptors were later involved in the decoration of the Lemercier wing of the Louvre courtyard during the reign of Napoleon. The oval salon and planning of the rooms have been compared to the Hotel Thelusson by Claude-Nicolas Ledoux.
