Installed above the roof, the aluminum louver blades were created by the engineer Jean Prouvé, providing control over the natural light that floods the building.

Le Signal,[6] a concrete sculpture by Henri Georges Adam, frames a fragment of the landscape and strongly emphasizes the exceptional situation of the building at the harbor entrance.

There are paintings by Claude Monet and other artists who lived and worked in Normandy, as well as paintings by Camille Corot, Eugène Boudin (with the largest collection of his works in the world), Eugène Delacroix, Gustave Courbet, Edgar Degas, Édouard Manet, Pierre-Auguste Renoir, Paul Gauguin, Alfred Sisley, Camille Pissarro, Paul Sérusier and Édouard Vuillard.

Modern art is also well represented with works by artists such as Henri Matisse, Albert Marquet, Raoul Dufy, Kees van Dongen, Fernand Léger, Alexej von Jawlensky and Nicolas de Staël.

There is also an old masters section displaying paintings of Hendrik ter Brugghen, José de Ribera, Simon Vouet, Luca Giordano, Francesco Solimena, Hubert Robert, John Constable and Théodore Géricault.