The place I was most excited to visit in Mexico City was Teotihuacán, an ancient Aztec city. It was my third visit to a historic Mesoamerican site this year. The first two were Lamanai in Belize and Tikal in Guatemala.
This is the Pyramid of the Sun. At 217 feet tall, it is the third largest pyramid in the world. There are 248 steps to reach the top with many of them leg stretchers. Yes, I counted them. I was surprised they were not a multiple of 13 like the pyramid near the entrance or the Mayan ruins at Tikal. Human sacrifices were made to God of the Sun at this pyramid.