Paris under Napoleon Each of the twelve arrondissements had its own mayor, but their power was limited to enforcing the decrees of Napoleon's ministers. After he crowned himself Emperor on December 2, 1804, Napoleon began a series of projects to make Paris into an imperial capital to rival ancient Rome. He built monuments to French military glory, including the Arc de Triomphe du Carrousel, the column in Place Vendôme, and the future church of the Madeleine, intended as a temple to military heroes; and began the Arc de Triomphe. To improve the circulation of traffic in central Paris, he built a wide new
Emperor his father's abdication, and therefore reigned (as opposed to ruled) as Emperor for fifteen days, 22 June to 7 July 1815. Since 3 May 1814, the Sovereign Principality of Elba was created a miniature non-hereditary Monarchy under the exiled French Emperor Napoleon I. Napoleon I was allowed, by the treaty of Fontainebleau with (27 April), to enjoy, for life, the imperial title. The islands were "not" restyled an empire. On 26 February 1815, Napoleon abandoned Elba for France, reviving the French Empire for a Hundred Days; the Allies declared an end to Napoleon's sovereignty over Elba on 25 March 1815,