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

travel destination photography horizontal colour image ponte de dom luis i river douro porto oporto portugal europe outdoors day building exterior architecture water clear sky blue arch dom luis i bridge arch bridge local landmark metal bridge portuguese culture incidental people tree river places of interest colour image colour color image color outside tourist destination travel architectural landmark place of interest background people people in the background arches arched typically portuguese portuguese culture traditional culture tradition traditional traditionally portuguese