The United Nations Building in Chile, the headquarters of the Economic Commission for Latin America and the Caribbean (ECLAC) is one of the most outstanding works of modern architecture of the 1960s in Chile. Nearly two hundred professionals participated in the design competition held in September 1960. Four of the forty entries were selected by an international jury at the United Nations Headquarters in New York. The winning project was developed by the architects Emile Duhart, with the collaboration of Roberto Goycoolea, Christian de Groote and Oscar Santelices. The team that developed the project was completed with the participation of the engineers César Barros and Harmut Vogel.
The ECLAC building was inaugurated on August 29, 1966 by the President of Chile Eduardo Frei Montalva and the Secretary General of the United Nations, U-Thant. Experts consider the building a landmark of modern Latin American architecture and the Chilean Government has included it in its list of historic sites that make up the nation's cultural heritage.