What are the key wine regions in Portugal?

Portugal offers impressive diversity in its wine regions - the famous Douro Valley, a home to a great-quality Port wine and increasingly to a wide range of reds and whites; Vinho Verde region, a land of crisp, delightful white wines made from local grape varieties; and the notable Alentejo region - an area grown famously for full-bodied reds from rather hardy varieties such as Alic Each region brings its differences, unicity in flavor, type of grape, and wine production; the results being the current deep tradition of wine in Portugal.
Please, mind that only logged in users can submit questions