This is the north face of the monument. Within a retaining wall, there was the intent to fill the space with water, replicating Lake Texcoco. The tendency, however, would have been for all of the birds within some hundreds of metres to pay frequent visits. In the background, beneath the Mexican flag, there is a representation of the sacred tree of the Maya, the ceiba. In the foreground, an eagle struggles with a serpent on top a cactus. This symbolizes the foundation of Tenochtitlan, the origin point for the Mexica culture. It was a beautiful morning, Sunday, I recall, with lanes closed to traffic, and many out taking a weekly exercise.