Take in the grandeur of Tehuacan Cathedral. Fit in a mass if you can or just wander around and enjoy a break from the outside world.
This principal church in Centro de la Ciudad comes recommended by many travelers, so make a spot for it on your travel plans. Don't think that's all there is to do here, though. There are a lot more attractions ready for you to check out after Tehuacan Cathedral. El Paseo Commercial Center, Tehuacan Pyramids, and Tehuacán Museum of Evolution are nearby.