"The archaeological evidence of Tenochtitlan isn't just impressive from a historical perspective, it is also remarkable from a STEM standpoint, too. After all, it reveals one overwhelming fact about the Aztecs: they were a highly advanced civilization who utilized many science, math, technology, and engineering practices in the construction of their metropolis. This fact is made evident by the impressive structures, artwork, and artifacts that this long-lost people left behind deep underneath present-day Mexico City. Throughout this text, we'll be exploring some of the achievements of the Aztecs and how this people who lived some 500 years ago was able to use advanced STEM skills to build one of the grandest cities in the Americas--and the world--at that time"--.