 The hearse proceeded from the Arc de Triomphe down the Champs-Élysées, across the Place de la Concorde to the Esplanade des Invalides and then to the cupola in St Jérôme's Chapel, where it remained until the tomb designed by Louis Visconti was completed.In 1861, Napoleon's remains were entombed in a porphyry stone sarcophagus in the crypt under the dome at Les Invalides.The cause of his death has been debated.