How did French urban planning transform Latin American capital cities during the 19th century?

During the 19th century, Latin American capital cities underwent a significant transformation as they sought to shed their colonial past and establish themselves as modern, cosmopolitan centers. This shift was driven by a desire to move away from the pervasive Baroque architecture of the Spanish colonial era, with leaders and architects looking primarily to France for inspiration.1

The transformation was characterized by several key developments:

• Urban Design: Cities expanded beyond their traditional colonial grids by adopting the French model of the tree-lined boulevard. The urban design principles of Baron Georges-Eugène Haussmann in Paris became the standard for growth. Notable examples include the Paseo de la Reforma in Mexico City, as well as major avenues and parks in Buenos Aires, Montevideo, Santiago, and Caracas.1
• Architectural Style: Public institutions—such as theaters, markets, and government buildings—were constructed in the Beaux-Arts or Neoclassical styles. This academic architecture often mirrored structures found in European capitals, reflecting a culture that was increasingly "thinking in French".12
• Professional Influence: The movement was fueled by immigrant architects from France and national architects trained in Paris. Institutions like the Santiago School of Architecture, founded by Frenchman François Brunet de Baines, helped institutionalize these French pedagogical and aesthetic influences across the region.12