Yesterday was the day-trip to Xochicalco, the remains of a pre-hispanic city. Afterward, we had lunch at a restaurant nearby, and then it was on to Cuernavaca where we had about an hour to walk around the market and do some shopping.
Of note is that yesterday was the first day since I've been here that I did not eat at least one meal at the open market in the village. It is also the first day that I've felt sick. Go figure.