 Perhaps the most ambitious project of modern architecture was the construction, begun in 1950, of Ciudad Universitaria outside Mexico City, a complex of buildings and grounds housing the National Autonomous University of Mexico.A cooperative venture, the project was directed by Carlos Lazo, Enrique Del Moral, and Pani.In the new campus the art of the Mexican muralists was incorporated into the architecture, beginning with Rivera's relief in the new Estadio Olímpico Universitario (1952), by Augusto Pérez Palacios, Jorge Bravo, and Raúl Salinas.