The most interesting place in Tláhuac is a town named Mixquic, where ancient indian traditions persist.
Mixquic is famous for its Day of the Death ceremonies.
This image is from last year:
Mictlantecuhtli, Aztec god of the afterlife, also presides the rites. He's properly adorned with Cempazúchitl flowers (Flower of the Dead).
The town of Mixquic:
Inside the church:
On the Day of the Dead, it takes about 3 hours and a half to get from downtown Mexico City to Mixquic, on its sotuheastern tip, bacause of the ingoing traffic.