On the Zocalo in Mexico City, adjacent to the Catedral Metropolitana, troupes of Shaman, dancers, and vendors set up performances and healing ceremonies. Ceremonies entail the use of burning herbs and vegetation along with chants and prayers designed to heal and cast out unwanted spirits. Performances are based on ancient Aztec and/or Inca ceremonies, performers and Shaman dress in elaborate traditional feathered head dresses and attire for the performances. Traditionally, men performed the rituals, however, women and, on occasion, children participate in the dances. There are different troupes, although similar, each has a slightly different ritual, dance, and drums or other accompaniments. Individual Shaman perform the healings while using various articles, artifacts, smoke chalices, and chants. The best time to view or participate is on weekends.