January 1 – Returns to Rio de Janeiro.
Travels to New York where he exhibits his Ninhos [“Nests”] at the “Information” show, curated by Kynaston McShine at the Museum of Modern Art.
Awarded a Guggenheim Foundation fellowship and establishes residence in New York City at 81, Second Avenue.
Show: June 30 – “Information,” Museum of Modern Art, New York;
Happening: August 23 – “Orgramurbana,” event organized by Luís Otávio Pimentel and Flamarion, at the Aterro do Flamengo, Rio de Janeiro, Hélio Oiticica shows his Area Bólide Água [Water]
Writings: April 21 – Text for the Information exhibition catalogue (New York: Museum of Modern Art), doc. nº 0324/70 AHO/PHO; September 4 – “Subterrânia” [From the Underground], O Pasquim [Rio de Janeiro], doc nº 0289/70 AHO/PHO.