Guelaguetza is an internationally recognized dance festival when when the people from Oaxaca's seven regions come to Oaxaca to compete in the huge open air theatre which overlooks the city.  It is held the last two Mondays in July and those two weeks resemble Mardi Gras with streets full of brightly dressed dancers, tourists and booths selling native handicrafts and food.  Every night there are free dance and music concerts held throughout the city. 
 You should be here!!!