Baja California: The western peninsula, which borders the U.S. state of California
Northern Mexico: Includes the expansive deserts and mountains of the border states; mostly ignored by tourists, this is "Unknown Mexico"
The Bajio: Historic states in a traditional silver-mining region
Central Mexico: Center, surrounding the capital city
Pacific Coast: Tropical beaches on Mexico's southern coast
Yucatan Peninsula: Jungle and impressive Mayan archaeological sites, along with the Caribbean coast.