The Sunday tianguis gives Teposcolula its most lived-in travel moment. Stalls spread around the main square with produce, snacks, household goods, and the small exchanges that keep the surrounding villages tied to town.
It is not a polished craft market, which is part of the appeal. Come in the morning, eat something local, and use it as a reason to linger after seeing the convent rather than treating Teposcolula as a photo stop.