Northern Portugal Highlights
Portugal's second-biggest city, Porto (Oporto to foreigners), has a brawny beauty all its own. Built on granite bluffs above the Rio Douro, its heart is a tangle of World Heritage-listed lanes tumbling steeply down to a medieval waterfront.
The Alto Douro (upper Douro) east of Peso da Régua is a harsh, hot landscape heavily refashioned by two millennia of pumping out wine. Terraced vineyards wrap around every precipitous, crew-cut hillside, and whitewashed port-wine quintas (estates) dot the valley.