The Dom Luis I Bridge spans the River Douro to the Ribeira District UNESCO World Heritage Site, Porto, Douro, Portugal, Europe

outdoors outside day colour image colour color image color horizontal photography dom luis i bridge ribeira district unesco world heritage site unesco world heritage sites unesco world heritage site world heritage sites douro porto portugal portuguese europe european travel no people nobody no one no one travel destination travel destinations travel destination water town boat transportation transport river river douro bridge metal architecture architectural close up close up diminishing perspective