Ponte Dom Luis I Bridge, UNESCO World Heritage Site, Douro River, Porto (Oporto), Portugal, Europe

travel destination photography horizontal colour image europe portugal portuguese culture outdoors sunset city building exterior architecture no people porto oporto unesco world heritage site unesco douro river river ponte dom luis i bridge national landmark bridge arch arch bridge elevated view sunlight incidental people roof old the past history 19th century colour color image color outside tourist destination travel architectural nobody no one no one landmark place of interest background people people in the background historical historic heritage cultural culture unesco world heritage sites world heritage site world heritage sites arches arched cities typically portuguese traditional culture tradition traditional traditionally portuguese european sundown dusk twilight x 2018m2 x printready