Édouard Manet's "The Luncheon on the Grass" is a seminal work which caused a scandal when it was first exhibited at the Salon des Refusés in Paris due to its unconventional treatment of the female nude.
The painting by Honoré Daumier called "The Third-Class Carriage" depicts travellers sitting in a dim railway carriage, revealing 19th-century social inequality through intimate everyday observation.