In 1521 the world of the Aztecs came to a sudden end when Hernán Cortés, the Spanish conquistador, destroyed their capital. The ruins of that city lie beneath the streets of modern-day Mexico City. Peter Lourie traveled to Mexico City to meet the renowned archaeologist Leonardo López Luján. With Dr. Luján as his guide, the author viewed the diggings at the Aztec Great Temple, and even met the God of Death in the basement of the temple's museum.