After the final defeat of Napoleon in 1815, the neoclassic style continued to be used during the French Restoration, particularly in Paris churches.
Examples include Notre-Dame-de-Lorette (1823–26) by Louis-Hippolyte Lebas and Saint-Vincent-de-Paul by Jacques-Ignace Hittorff (1824–44).
By the 1830s, the architectural style was succeeded by Baroque Revival and Beaux-Arts architecture.

A change of style began to appear early in the 19th century, particularly after the publication in 1802 of le Génie du christianisme by one of the leading figures of French romanticism, François-René de Chateaubriand (1768-1848).
He appealed for a return to the Gothic style, which, as the style of the great cathedrals, he considered was the only truly great French style.
The movement toward romanticism and gothic was accelerated by the publication of the hugely successful novel Notre-Dame de Paris by Victor Hugo in 1821, and then the program of restoration of French Gothic monuments led by Prosper Mérimée and conducted by Eugène Viollet-le-Duc (1814-1879).
This, along with the French Revolution of 1830, brought to a close the era of French neoclassicism.
After the final defeat of Napoleon in 1815, the neoclassic style continued to be used during the French Restoration, particularly in Paris churches. Examples include Notre-Dame-de-Lorette (1823–26) by Louis-Hippolyte Lebas and Saint-Vincent-de-Paul by Jacques-Ignace Hittorff (1824–44). By the 1830s, the architectural style was succeeded by Baroque Revival and Beaux-Arts architecture.
A change of style began to appear early in the 19th century, particularly after the publication in 1802 of le Génie du christianisme by one of the leading figures of French romanticism, François-René de Chateaubriand (1768-1848). He appealed for a return to the Gothic style, which, as the style of the great cathedrals, he considered was the only truly great French style. The movement toward romanticism and gothic was accelerated by the publication of the hugely successful novel Notre-Dame de Paris by Victor Hugo in 1821, and then the program of restoration of French Gothic monuments led by Prosper Mérimée and conducted by Eugène Viollet-le-Duc (1814-1879). This, along with the French Revolution of 1830, brought to a close the era of French neoclassicism.
Neoclassicism in France