Many Paris formal projects predate Haussmann, un particular the rue de Rivali which was started under Napoléon. And their are many pre revolution landmarks, especially squares (Vendôme, Concorde). However what Haussmann did is creating a new system of avenues at city level, slashing through already built up neighbourhod. Also keep in mind that Haussmann"s intervention was meant to price the working class pit of the city centre!
Many Paris formal projects predate Haussmann, un particular the rue de Rivali which was started under Napoléon. And their are many pre revolution landmarks, especially squares (Vendôme, Concorde). However what Haussmann did is creating a new system of avenues at city level, slashing through already built up neighbourhod. Also keep in mind that Haussmann"s intervention was meant to price the working class pit of the city centre!