Colonia Santa María la Ribera is a colonia located in the Cuauhtémoc borough of Mexico City, just west of the historic center. It was created in the late 19th century for the affluent who wanted homes outside of the city limits. The colonia reached its height between 1910 and 1930. In the 1930s, the middle class moved in and a new era of construction began. The colonia began to deteriorate in the 1950s, as the city grew around it and apartment buildings were constructed. Since the 1985 Mexico City earthquake, poorer residents have moved in and economic housing has been constructed. Today, the colonia is a mix of old mansions and homes (with over 1,000 categorized as having architectural or historic value), small shops and businesses, tenements and abandoned buildings. The colonia has one m