The Douro River, the Oporto Wine and Chocolate. Great combination.
Sipping the Douro (Portugal). 'The exquisite Alto Douro wine country is the oldest demarcated wine region on earth. Its steeply terraced hills, stitched together with craggy vines that have produced luscious wines for centuries, loom on both sides of the sinuous Rio Douro. Whether you get here by driving the impossibly scenic back roads, or catch a train or boat from Porto, take the time to hike, cruise and taste.' http://www.lonelyplanet.com/portugal