Codex Chimalpopoca or Códice Chimalpopoca is a postconquest cartographic Aztec codex which is officially listed as being in the collection of the Instituto Nacional de Antropología e Historia located in Mexico City under "Collección Antiguo no. 159". It is best known for its stories of the hero-god Quetzalcoatl. The current whereabouts of the codex are unknown. It appears to sadly have been lost in the mid-twentieth century. Study of the codex is therefore necessarily provided only through copies and photographs. The codex consists of three parts, two of which are more important, one that regards the pre-Hispanic history of Central Mexico, the "Anales de Cuauhtitlan" and the other that regards the study of Aztec cosmology, the "Leyenda de los Soles".