The cylindrical structure in question sits near the cathedral built over Templo Mayor, one of the main temples of the former Aztec capital. Naturally, the experts are stunned. “The Templo Mayor ...

Before Spanish colonization, Templo Mayor served as the religious center for the Aztec people. When Spanish conquistadors arrived in the early 16th century, the temple was among many structures ...

It has five Aztec temples, the ruins of which have been identified, a cathedral (the largest on the continent) and some fine 19th- and 20th-century public buildings such as the Palacio de las Bellas ...