The Tlatelolco archaeological site is located in Mexico City and was once part of the ancient city of Tenochtitlan. It was a significant urban center for the Aztec civilization, known for its bustling markets and complex social structure. The site features impressive structures, including temples and residential areas, showcasing the architectural skills of the Aztecs. Excavations at Tlatelolco have revealed important artifacts, such as pottery, tools, and religious items, which provide insight into the daily life and culture of the Aztecs. The site is also notable for the Plaza de las Tres Culturas, where pre-Hispanic, colonial, and modern elements coexist, reflecting Mexico's rich history.