What was the ‘Avenue of the Dead’, and where was it?
Answer: It was the main thoroughfare of the city of Teotihuacan, one of the most significant cities in the Aztec Empire (circa 12th century to 1500s). Around 2.5 km in length, it was so named because the mounds which hugged the length of the path appeared to the Aztecs to look like tombs.
Source: The Teotihuacan Trinity by Annabeth Headrick