Architecture in the Jardin des Plantes'' In 1829 Rohault de Fleury and M. de Belleyme were commissioned to design a huge
maison de refuge (shelter for the poor). In 1832 Rohault de Fleury was named architect of the
Museum of Natural History in Paris, replacing
Jacques Molinos. Between 1832 and 1838 he designed the
Galerie de Minéralogie et de Géologie, the greenhouses and the monkey house. His use of glass in what are now the Mexican and Australian hot-houses was highly innovative for the period. In 1833 he was named architect of the several hospitals and hospices in Paris. He exhibited at the
Salon in 1837. In 1840 he made plans for an Italian opera house. in 1877 Rohault de Fleury was part of the team led by
Alfred Armand (1805–88) that designed the
Grand Hôtel du Louvre, which opened in 1855 in time for the
Exposition Universelle. The others were
Jacques Ignace Hittorff (1793–1867) and
Auguste Pellechet (1829–1903). He built the Chambre des Notaires in 1857. He worked with Hittorff in 1857 and 1858 on plans for the buildings around the
place de l'Étoile. He designed several other buildings including the Hippodrome, the old
Opéra, the Stolikoff hotel on the
rue Saint-Armand and the Casimir Périer hotel on the
avenue Montaigne. Charles Rohault de Fleury was named Chevalier of the
Legion of Honour in 1843, and became an officer on 1 January 1861. His son
Hubert Rohault de Fleury became a painter, and was instrumental in the erection of the Basilica of
Sacré-Cœur, Paris. His other son
Georges Rohault de Fleury (1835–1904) was trained as architect but became an archaeologist and art historian.
Religious studies and archaeology After 1865 Charles Rohault de Fleury devoted himself to archaeological and religious studies with his son Georges, who arranged for publication of his works. One of these books was titled
Mémoire sur les Instruments de la Passion, and served to catalogue supposed relics of the
True Cross, and analyze the proportion that if put together all of the relics would account for far more wood than would make one cross. He came to the conclusion that the relics found came up to far less wood than would make up a cross used in a
Roman crucifixion. == Death and posthumous works ==