Teotihuacan is known as the site of many of the most architecturally significant Mesoamerican pyramids built in the pre-Columbian Americas. At its zenith, perhaps in the first half of the first millennium CE, Teotihuacan was the largest city in the pre-Columbian Americas, with a population estimated at 125,000 or more, making it at least the sixth-largest city in the world during its epoch. After the collapse of Teotihuacan, central Mexico was dominated by the Toltecs of Tula until about 1150 CE. (Source: Wikipedia)
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