The restored Bourbon King Charles X continued the rue de Rivoli eastwards from the Louvre, as did King Louis-Philippe. Finally, Emperor Napoleon III extended it on into the 17th-century quarter of the Marais (see: Right Bank). Beneath the rue de Rivoli runs one of the main brick-vaulted oval-sectioned sewers of Paris' much-imitated system, with its sidewalks for the sewerworkers.