Douro - online puzzles

The Douro (Portuguese: Douro [ˈdo(w)ɾu]; Spanish: Duero [ˈdweɾo]; Proto-Celtic: *Dur, lit. ' water ') is one of the major rivers of the Iberian Peninsula, flowing from its source near Duruelo de la Sierra in Soria Province across northern-central Spain and Portugal to its outlet at Porto.