Ponte de Dom Luis I over River Douro, Porto (Oporto), Portugal, Europe

travel destination photography vertical colour image ponte de dom luis i river douro porto oporto portugal europe outdoors day building exterior architecture low angle view water clear sky blue arch dom luis i bridge arch bridge local landmark metal bridge portuguese culture boat moored barrel transportation incidental people river places of interest colour image colour color image color outside tourist destination travel architectural low angle from below looking up landmark place of interest background people people in the background transport arches arched typically portuguese portuguese culture traditional culture tradition traditional traditionally portuguese