Modern Paris was indelibly shaped by the rebuilding project ordered by Napoleon III and carried out by Baron Haussmann in the 1850s and '60s. The large-scale demolition of whole neighborhoods in central Paris, coupled with a boom in industrial development outside the city, cemented a class division between center and periphery that has persisted into the twenty-first century. Curiously, this division is the obverse of the arrangement of most American cities, in which the inner city is typically impoverished while the suburbs are wealthy.