In a sense, 1521 is Mexico's 1619. A foundational moment that for centuries has been shaped by just one perspective: a European one. The story of how Hernán Cortés and a few hundred Spaniards conquered the mighty Aztec Empire, in the heart of what's now modern Mexico City, has become a foundational myth of European dominance in the Americas. And for a long time it was largely accepted as truth. But in recent decades researchers have pieced together a more nuanced, complicated version based on Indigenous accounts: a version that challenges what one historian calls "the greatest PR job in the history of the West." In this episode, the real story of the fall of Tenochtitlán.