Regulation of the growth only began to be implemented during the 1960s with the creation of various development plans for Greater Santiago, a concept that reflected the new reality of a much larger city. In 1958 the Intercommunal Plan of Santiago was released. The proposed scheme set a limit of 38 600 urban and semi hectares for a maximum population of 3,260,000 inhabitants, included plans for the construction of new avenues, like the Américo Vespucio Avenue and Panamericana route 5, and the expansion of 'industrial belts'. The celebration of the World Cup in 1962 gave new impetus to implement plans for city improvement. In 1966 the Santiago Metropolitan Park was established in the Cerro San Cristóbal, MINVU began eradicating shanty towns and building new homes. Finally, the Edificio Diego Portales was constructed in 1972.