Nestled in an Andean valley at 6,000 feet, the Bolivian city of Tarija is truly one of South America's great undiscovered gems. You'll find colonial architecture, a near-perfect Mediterranean climate, and vineyards outside town stretching to the horizon. It's also one of the most affordable cities in the Americas.
Mexico has suffered a bum rap over the past few years. Drug lords, gang violence, swine flu ... the combination has translated into a dramatic falloff in this country's appeal for would-be American retirees. Meantime, Mexico is home to more than a million American expats. They can't all be misguided.