Analyzing the relevance of Teotihuacan as a historical site, it is important to consider the cities religious Architecture and the effects that such architecture has on our current understanding of mesoamerican society and culture. One of the most fascinating aspects of Teotihuacan is the manner in which the city was built and the technology utilized. In an article written by the site Ancient Code , the subject of Aztec mathematical and Scientific ability is discussed. One of Teotihuacans most interesting architectural features is the presence of mica,a mineral found embedded in many of Teotihuacan’s structures. What makes the utilization of mica so puzzling is its relative distance from the city. During the epoch in which Teotihuacan was created Mica was found 3,000 mile away in Brazil. Furthermore Mica possesses stable attributes when exposed to electricity, light, moisture, and extreme heat or cold. With all this said, it is important to reflect on the ingenuity of Teotihuacan’s builders. Without such innovative technologies, the understanding of mesoamerican architectural practices would be lost.