The one-hour bus ride from Mexico City turned into three but at least buskers kept us company with their music. Traffic sped, slowed, and crawled to an almost stop. One accident ahead was all it took to throw everything off. At one point, Teotihuacán was the largest city in the Western hemisphere, and one of the largest in the world, home to some 100,000 people, perhaps more. Moreover, though we don’t know exactly who built it, we do know that multiple ethnicities lived there. Its grandiosity is all the more staggering when you consider it was constructed roughly 2,000 years ago. Humans have really been very capable for a very long time. What else have we been? Teotihuacán takes time to wander. We walked…