Ugly buildings - Petrobras Headquarters, Rio de Janeiro

Petrobras Headquarters is an office building used by Petrobras in the Centro neighbourhood of Rio de Janeiro, Brazil. It is build in a style called 'concrete brutalism'. The 108-meter high, 29 storey building was constructed between1967 and 1972. The  architect was Roberto Luís Gandolfi. The building is in good company. Its next door neighbor is Rio De Janeiro Cathedral, an equally controversial example of concrete brutalism