Torres de Satélite ("Satellite Towers"), located in Ciudad Satélite, a northern suburb of Mexico City. I stopped on my way back from San Cristobal.
The concept was developed by Luis Barragán and Mathias Goeritz (both pictured), with inspiration from painter Jesús Reyes Ferreira.
Completed in 1958, the monument was a symbol of modernity for Ciudad Satélite, a new upper-middle class master planned community outside of Mexico City.
The plan for Satélite, as it's usually called, was designed by Mario Pani and José Luis Cuevas.
Source: laguiainmobiliaria
The tallest tower is 650 feet.
A photo of the towers is in Luis Barragan's home studio.