Unidad Habitacional Nonoalco-Tlatelolco is a large residential complex located in Mexico City. Built in the 1960s, it was designed to provide affordable housing for a growing urban population. The complex features a mix of apartments, green spaces, and community facilities, making it a significant example of modernist architecture in Mexico. The development is notable for its unique design and urban planning, which aimed to create a self-sufficient community. It is also historically significant, as it was one of the sites of the tragic Tlatelolco massacre in 1968, where many students and civilians lost their lives during a protest.