Roberto Gandolfi designed the Petrobras building in downtown Rio de Janeiro. It rises 108m or 29 floors with a floor area of 120,000 m². Blocks of building open up to open-air balcony with structure continuing through. It was completed in 1972.
(Rodrigo_Soldon– flickr/creative commons license)
(Thomas Locke Hobbs– flickr/creative commons license)
(Thomas Locke Hobbs– flickr/creative commons license)
(Rodrigo_Soldon– flickr/creative commons license)
(athomson– flickr/creative commons license)
(featured image by jimkillock on flickr/creative commons)
