Colonia San Rafael is a colonia of the Cuauhtémoc borough of Mexico City, just west of the historic city center. It was established in the late 19th century as one of the first formal neighborhoods outside of the city center and initially catered to the wealthy of the Porfirio Díaz era. These early residents built large mansions, many with French influence, and many still remain. Middle class residents moved in soon afterwards, and building and rebuilding over the 20th century has introduced a number of architectural styles. These buildings include some of the first works by Luis Barragán and today 383 are classified as having historic value.