Construction ran from 1722 to 1728 for Louise Françoise de Bourbon, the legitimised daughter of Louis XIV and Madame de Montespan. Lorenzo Giardini made the first plan and died in 1722. Pierre Cailleteau, who died in 1724, and Jean Aubert continued the work. The infobox calls the palace French Baroque Neoclassical.
Bernard Poyet's Neoclassical facade on the Seine, with twelve Corinthian columns, was added beginning in 1806. Jules de Joly renovated the meeting hall, with the first stone laid on November 4, 1829, and the interior completed in September 1832. The hemicycle seats 577 deputies and looks as it did in 1832.
Eugène Delacroix and assistants decorated the library, built in the style of ancient Roman baths with five cupolas, between 1838 and 1847. The palace has 1,330,000 square feet (124,000 m²) and over 9,500 rooms. Sessions are open to the public, but access must be requested through a deputy's office.

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