View of Douro River and Dom Luis I bridge, UNESCO World Heritage Site, Porto, Norte, Portugal, Europe

photography horizontal color image travel destinations travel outdoors day one person people one woman only only women adult adults only portugal europe dom luis i bridge bridge architecture douro river river water city urban scene building porto cloud sky boat backpack tree trunk tree brown hair ponytail photographing camera photography themes leisure activity smart phone communication trees travel destination tourist destination tourist destinations skies rivers flowing water outdoor outside one person only 1 person 1 person only person daytime cities urban buildings bridges connection connections nautical vessel nautical vessels transport transportation architectural