This thesis advocates for the preservation of the Californian style in Argentina, an architectural style that has been largely undervalued and overlooked by architectural historiography and professionals. The style developed during the first half of the 20th century in association with the Mission Revival and the Spanish Colonial Revival styles in California and the Neocolonial style in Argentina. This work examines the representations of the style in popular culture and political propaganda, identifying the values and ideas that instilled the style in Argentinian social memory. Also, after examining the biases that threaten its preservation, the thesis demonstrates the Californian style's major contribution to the socio-cultural, architectural, and urban development of Argentina. Finally, the valuation of the style by the general public is demonstrated in the case of Barrio Perón, a Californian-style planned community in Buenos Aires, whose residents launched a tenacious advocacy campaign to preserve it.