After the first big retrospective of the work of Joan Miró in Barcelona (1968),the artist had decided to set up a building to make his work accessible to the public on a permanent basis. Sert was commissioned,and created an open-plan structure where the interior space communicated with the exterior,producing a perfect balance between architecture and landscape.From these dates,the Foundation was expanded two times,and the architect commissioned to carry out this task was Jaume Freixa, a pupil of Sert's who had worked with him for eleven years at Harvard and had played an active part in the creation of the Foundation.