Zapotec ruins of Dainzu you can explore on our own. We were able to walk anywhere we wanted, no designated paths, no fences, no other tourists around.
Dainzu meaning "Hill of Cactus Plants" reached its zenith between 600 BC and AD 200. Settlement built on a hillside faced the west. Some tombs, religious buildings and a ball court have been restored. The most interesting of them is Templo Amarillo or Yellow Temple, a small stone structure with front patio and two columns. The entire building was originally painted yellow, what indicates its religious significance.