Architecture in Mexico City in the mid-20th century was shaped by rapid economic and urban growth, demographic change, new construction technologies, and politics. Architects adapted modernist idioms and those that evoked historical precedents for new purposes. Key figures who had begun practice earlier in the century, including Mario Pani, Juan O’Gorman, José Villagrán García, and Luis Barragán, designed major new works and strongly influenced the profession, even as a new generation led by Pedro Ramírez Vázquez, Ricardo Legorreta, and Teodoro González de Léon came of age. As they had been since the 1920s, public patrons were the most important clients of modern buildings, which often addressed needs for better housing, education, and health care. The period also saw the rise of modern suburbs and the evolution of the single-family house, as well as the creation of major buildings for increasingly important cultural institutions, especially museums. As they had in preceding decades, architects used the non-architectural arts, particularly painting, to distinguish their works. The legacy of the Mexican muralist movement was most evident on the facades of major buildings in the new University City, where the influence of international modernist planning principles was also striking. In 1968 Mexico City hosted the Olympics, for which architects, planners, and designers created a network of buildings and images that functioned interdependently to present Mexico as cosmopolitan and historically rooted in its indigenous history. Sprawl and pollution worsened in the 1970s, as the capital came to be dominated by buildings that were not designed by architects. While some observers questioned the relevance of architecture in the face of seemingly unstoppable and uncontrollable growth, talented young architects responded with buildings notable for their monumentality, mass, and sophisticated engagement with historical types.