The events that occurred before, during and after the 1968 massacre on Plaza de las Tres Culturas are chronicled in Memorial del 68, a compelling multimedia exhibit in the Centro Cultural Universitario Tlatelolco. The cultural center has two other outstanding permanent exhibits in the Museo de Sitio.
The shiny Museo de Sitio houses more than 400 objects unearthed at the archaeological site, such as pre-Hispanic offerings and ceramic artifacts. The interactive museum continues on the 2nd floor in the tower building across the way, where you can learn about colonial-era Tlatelolco and the area's flora and fauna. The tower's 3rd floor is home to the Colección Stavenhagen, an extraordinary collection of more than 500 pre-Hispanic clay and stone sculptures, including amusing animal figures and phallic works.