Dom Luis I Bridge looking from below with nameplate, UNESCO World Heritage Site, Porto, Portugal, Europe

travel destination photography horizontal colour image outdoors day europe unesco world heritage site unesco clear sky blue bridge connection no people portugal portuguese culture dom luis i bridge text western script low angle view built structure national landmark lantern 19th century old the past history porto colour image colour color image color outdoor outside tourist destination travel nobody no one no one low angle from below looking up landmark place of interest historical historic heritage cultural culture unesco world heritage site unesco world heritage sites unesco world heritage site world heritage sites typically portuguese portuguese culture traditional culture tradition traditional traditionally portuguese europe european