Sunset over Ribeira district, the Douro, Rabelos and Ponte Dom Luis I Bridge, UNESCO World Heritage Site, Oporto (Porto), Portugal, Europe

horizontal color image travel destinations travel outdoors sunset dusk porto portugal europe river douro river water dom lu?s i bridge arch bridge bridge transportation connection architecture oporto no people building exterior building city urban scene rabelo boat boat cargo boat light beam illuminated reflection past history unesco world heritage site unesco boats nautical vessel nautical vessels transport cities urban colour image color colour sundown evening twilight nobody no one no person outdoor outside rivers flowing water travel destination tourist destination tourist destinations