Images from Day of the Dead, Mexico City 2017 

The Day of the Dead or Día de Muertos is an ever-evolving holiday that traces its earliest roots to the Aztec people in what is now central Mexico. The Aztecs used skulls to honor the dead a millennium before the Day of the Dead celebrations emerged. Skulls, like the ones once placed on Aztec temples, remain a key symbol in a tradition that has continued for more than six centuries in the annual celebration to honor and commune with those who have passed on.