Georges-Eugène Haussmann (1809–1891), who called himself Baron Haussmann, was a French civic planner whose name is associated with the rebuilding of Paris.
Commissioned by Napoleon III to instigate a program of planning reforms in Paris, Haussmann laid out the Bois de Boulogne, and made extensive improvements in the smaller parks. Additional, sweeping changes made wide "boulevards" of hitherto narrow streets. A new water supply, a gigantic system of sewers, new bridges, the opera house, and other public buildings, the inclusion of outlying districts - these were among the new prefect's achievements, accomplished by the aid of a bold handling of the public funds.
His work had destroyed much of the medieval city. It is estimated that he transformed 60% of Paris' buildings. Notably, he redesigned the Place de l'Étoile, and created long avenues giving perspectives on monuments such as the Arc de Triomphe and the Opera Garnier.