Both countries have big-league wine industries (Argentina's is the world's fifth-largest), nearly 500 years of vintages, and growing areas with Eden-like climates for farming wine grapes--so warm and dry that grapes easily ripen and pesticides, fungicides, and anti-rot measures are often unnecessary.

FORBES: Making a Case for South America

Wine character fluctuates with each vintage dependent on how cool or how warm it got, the amount of rain in the spring and fall, the wind and even the bird population.

FORBES: Female Winemaker Series: Oregon's Luisa Ponzi