The ancient civilization known for its city of Tenochtitlan is the Aztecs. Tenochtitlan was a remarkable city located on an island in Lake Texcoco, in what is now Mexico City. Founded in 1325, it became the center of the Aztec Empire and was renowned for its impressive architecture, elaborate temples, and advanced infrastructure, including canals and causeways. The city was a hub of trade, culture, and religion, showcasing a sophisticated society that thrived until the arrival of Spanish conquistadors in the early 16th century. The fall of Tenochtitlan marked a significant turning point in the history of the New World.