a stunning aerial view of the douro river's bend with a bridge and pier in pinhao

douro river pinhapound portugal aerial view bend bridge pier scenic landscape nature beauty travel countryside tranquility picturesque outdoor waterway hills vineyards rural heritage culture european vacation serenity lush exploration idyllic tourism natural adventure riverbank waterfront greenery traditional peaceful breathtaking charm wine region boat sunlight horizon destination valley cultural experience stunning summer scenery vineyard rows country