This will be my fourth trip to Mexico City for work, and as always I am planning to spend the weekend there. I've already done most of the "usual" sightseeing - the pyramids, the zocalo, xochimilco, museums, etc. Does anyone have any suggestions for some out-of-the-ordinary things to do or experience? Most posts I've read are thumbs down on Cuernavaca. Anyone ever done the overnight horseback trip out of Tepoztlan?