Spend a day in Douro Valley, visiting two beautiful wineries to sample sparkling wine, Port, local wine and 'vinho verde' -- a young or green wine. Called 'adegas,' the Portuguese wine estates are as much of an attraction as the robust wine they produce – steeped in history and surrounded by heart-stopping countryside. Soak up the scenery as well as the wine, and enjoy a traditional 3-course lunch, too.