The Luxembourg Palace is at 15 Rue de Vaugirard in the 6th arrondissement of Paris, France. It was originally built (1615–1645) to the designs of the French architect Salomon de Brosse to be the royal residence of the regent Marie de' Medici, mother of King Louis XIII. After the Revolution it was refashioned (1799–1805) by Jean Chalgrin into a legislative building and subsequently greatly enlarged and remodeled (1835–1856) by Alphonse de Gisors. The palace has been the seat of the upper houses of the various French national legislatures since the establishment of the Sénat conservateur during the Consulate; as such, it has been home to the Senate of the Fifth Republic since its establishment in 1958.

The Jardin du Luxembourg, known in English as the Luxembourg Garden, colloquially referred to as the Jardin du Sénat, is located in the 6th arrondissement of Paris, France. The creation of the garden began in 1612 when Marie de' Medici, the widow of King Henry IV, constructed the Luxembourg Palace as her new residence. The garden today is owned by the French Senate, which meets in the Palace. It covers 23 hectares and is known for its lawns, tree-lined promenades, tennis courts, flowerbeds, model sailboats on its octagonal Grand Bassin, as well as picturesque Medici Fountain, built in 1620. The name Luxembourg comes from the Latin Mons Lucotitius, the name of the hill where the garden is located.