Maps are art that tell a story, relay information, location and time.
Maps also tell us about cultures and how they see the world.
The Aztecs were a predominately violent and pagan culture. Their maps also displayed their art and their worldview.
This excellent video by Mapster gives us some insight.
Video from Mapster
"This is the first in a series of new videos I’m making where I explore the history of mapping around the world. We’re starting with the Frontispiece of the Codex Mendoza, created by the Aztecs / Mexica in the 16th century." from video introduction