We spent the morning in Oscar Niemeyer’s adventurous Bienal building in the Parque de Ibirapuera.   It was originally designed as a pavilion for industrial fairs with a huge amount of flat space on three floors, none of it air conditioned, and was only first used for the third Bienal in 1957.   It has been curated this year by Gabriel Pérez-Barreiro, who has invited seven artists, including two Brazilians, to make their own interventions/installations:-