Bridge, arch bridge Ponte Dom Luis I over the Douro, Twilight, Porto, Portugal, Europe

arch bridges arch bridge architecture atmosphere atmospheric attractions attraction break of dawn bridges bridge centro histórico cities city center city centres city centre cityscapes cityscape city view city constructions construction dawns dawn daybreak dim douro subregion douro duero dusky dusk european europe famous place high angle shot high angle view high angle view historic center historic centre historic city center historic city centre illuminated illuminations illumination mood morning atmosphere morning dawn morning light morning nobody no one no people old towns old town outdoors outside overviews overview place of interest ponte dom luís i bridge ponte dom luís i porto portugal portuguese rivers river sights sight southern europe south europe steel buildings steel building town travel & geography travel photography twilight unesco world heritage sites unesco world heritage site views view waters water