Who made Paris like that?

If you have ever been to Paris or even looked at some photos about the city, there is something in the architecture very specific of the capital of France. This little je-ne-sais-quoi is due to the dear Baron Haussmann who left his print whole over Paris.
Here is what you need to know about him.

Baron Georges-Eugène 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. The garden of Luxembourg were cut down to allow of the formation of new 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 Haussmann.
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'Etoile, and created long avenues giving perspectives on monuments such as the Arc de Triomphe and the Opera Garnier.
Baron Georges-Eugène Haussmann was hired by Napoleon III on 22 June 1852 to "modernize" Paris. He hoped in hiring Haussmann that Paris could be moulded into a city with safer streets, better housing, more sanitary, hospitable, shopper-friendly communities, better traffic flow, and, last but not least, streets too broad for rebels to build barricades across them and where coherent battalions and artillery could circulate easily if need be.
He created broad avenues linked to the main train-stations so army troops from the provinces could be operative in a short amount of time.
Because of Haussmannization, that is the creative destruction of something for the betterment of society, the 1860s was a time of intense revolt in Paris. Many Parisians were troubled by the destruction of "old roots". Haussmann was also criticized for the great cost of his project.

Now you know the basics, the why and the how; you can walk around Paris and try to figure out which architecture "belongs" to Haussmann and which one doesn't. You will see, it's quite easy!

The image is taken from Linternaute.fr