Located in the Retiro district of the Autonomous City of Buenos Aires is the IBM building designed by Mario Roberto Álvarez & Associates. Conceived to house the headquarters of the IBM company, this office building was designed around 1979 and consists of a tower supported by two large concrete structural cores on a base, which is separated from the ground and the shaft of the tower to house the ground floor and a level of common areas in order to maintain the urban scale. The language of the building is recognizable from a distance as it is formed by an enclosure of horizontal bands of glass and exposed concrete parapets-parasols, which achieve a dialogue and balance in the proportion of full and empty spaces.
