Overview: 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, and the fascinating National Museum of Anthropology. For a change of pace, Rudy trades city life for the soothing waters of the Pacific coast, and the palm-fringed resorts of Ixtapa and Zihuatanejo.