An Aztec temple, a colonial church and a modernist housing block around one square, and a massacre in 1968 that the state denied for decades.
The square is named for the three cultures visible around it at once: the Aztec ruins of Tlatelolco, the colonial church of Santiago built from their stones in 1609, and the modernist Nonoalco-Tlatelolco housing estate of the 1960s.
The inscription on the plaque reads, in translation: On 13 August 1521, heroically defended by Cuauhtémoc, Tlatelolco fell to Hernán Cortés. It was neither a triumph nor a defeat; it was the painful birth of the mestizo people that is Mexico today.
Tlatelolco
The twin city of Tenochtitlan, on an adjoining island, and its commercial centre. The Spanish chroniclers described a market here handling tens of thousands of people a day, with everything from feathers and jade to slaves, and Bernal Díaz wrote that some of his companions who had been to Rome and Constantinople had seen nothing like it.
It was the last place to fall in 1521, after Tenochtitlan itself, and where Cuauhtémoc, the last emperor, was captured.
The excavated temple platforms are open to walk around.
2 October 1968
Ten days before the Olympic Games opened in Mexico City, several thousand students and others gathered in this square as part of months of protest against the government of Gustavo Díaz Ordaz.
At around six in the evening, the army and a plain-clothes paramilitary unit — the Batallón Olimpia, wearing white gloves — surrounded the square and opened fire.
The government said four people died. Contemporary journalists and later investigations put the figure in the hundreds; the true number has never been established. Thousands were detained and many were tortured.
The state suppressed the account for decades. Declassified documents from the 1990s onwards, and a special prosecutor’s investigation, established the involvement of the army and the paramilitary unit at the highest level. Nobody has been convicted.
Elena Poniatowska’s La noche de Tlatelolco collected survivor testimony and is the standard account.
The Games opened on schedule.
The memorial
A stone memorial on the square lists some of the known dead, with the poem by Rosario Castellanos.
The Centro Cultural Universitario Tlatelolco on the square holds Memorial del 68, a permanent exhibition on the student movement and the massacre — testimony, film, documents and photographs. It is free, it is thorough, and it is the reason to come.
1985
The Nonoalco-Tlatelolco estate was also badly hit in the 1985 earthquake. The Nuevo León building collapsed completely, killing several hundred people, and the government’s slow response was a turning point in Mexican civil society — neighbours organised the rescue themselves.
Practicalities
The square and ruins are free and open. The Memorial del 68 is free and closed Mondays.
Metro Line 3 to Tlatelolco.
It is a working residential district, not a tourist quarter.
More History
Palacio Nacional and the Rivera Murals
Diego Rivera's history of Mexico, painted across a staircase over sixteen years, in the building where the president works.
Casa Luis Barragán
The house of Mexico's greatest modern architect, kept exactly as he left it, and visitable only by booked tour.