Opened in 1986 Rio’s Museum of Contemporary Art (MAC) known as Museu de Arte Contemporânea de Niteróiis is a scene stealer. Designed by the Brazilian architect Oscar Niemeyer it houses a permanent collection of paintings and sculptures from Brazilian artists whose works span five decades.
The permanent works are on renewable loan from Brazilian private collector Joao Sattamini, who has assembled one of the largest private collections of contemporary art.
This is the link for the Museum, unfortunately I could not find a version in English. http://www.macniteroi.com.br/index.php?op=principal
Oscar Niemeyer also designed the NovoMuseu Museum in Curitiba, Brazil, another fabulously designed building.