douro river valley (2025) porto to porto | 8 days as you follow the douro river through portugal and into spain, you鈥檒l cruise past steeply terraced hillsides, quaint villages and acres of ripe vineyards. enjoy private tastings of port.... ship: s.s. s茫o gabriel countries: portugal, spain river: douro 4.3/5 (242 reviews) from $3,999 per person view itinerary dates & pricing