Mexico City, the world's largest metropolis, is modern, crowded, cosmopolitan, and steeped in tradition. Rudy begins with Mexico's ancient roots just outside the city at pre-Aztec Teotihuacán. The superb National Museum of Anthropology provides more insights into ancient Mexico. For modern day excitement, we hang out at the Zocolo, the world's second largest square and the center of national life since the Aztec era. Finally we head beach-ward to the resorts of Ixtapa-Zihuatanejo on the Mexican Riviera. Tips on getting around and water sports.