The Hôtel des Invalides, commonly called Les Invalides, is a complex of buildings in the 7th arrondissement of Paris, France, containing museums and monuments, all relating to the military history of France, as well as a hospital and an Old Soldiers' retirement home, the building's original purpose. The buildings house the Musée de l'Armée, the museum of the Army of France, the Musée des Plans-Reliefs, and the Musée d'Histoire Contemporaine.