<P> Mexico City's Zócalo, the Plaza de la Constitución, is located at the site of Tenochtitlan's original central plaza and market, and many of the original calzadas still correspond to modern city streets . The Aztec calendar stone was located in the ruins . This stone is 4 meters in diameter and weighs over 20 tons . It was once located half - way up the great pyramid . This sculpture was carved around 1470 under the rule of King Axayacatl, the predecessor of Tizoc, and is said to tell the history of the Mexicas and to prophesy the future . </P> <P> In August 1987, archaeologists discovered a mix of 1,789 human bones five metres below street level in Mexico City . The burial dates back to the 1480s and lies at the foot of the main temple in the sacred ceremonial precinct of the Aztec capital . The bones are from children, teenagers and adults and a complete skeleton of a young woman was also found at the site . </P>

The wonders of tenochtitlan city of the aztecs