In Buenos Aires in May 1957, Ordinance 4110 was issued and entitled as “Regulations to construct ‘Tower Blocks’ that permits and promotes free-standing buildings with a basement and a high tower”. This regulation, as well as other economic, technical, and political issues of the time, led to the construction of a large number of towers, two of which this paper will highlight, that measured up to 120 meters high and that were settled in precise articulation with the fabric of the traditional block in Buenos Aires.