Dom Luis I Bridge over Douro River, Porto (Oporto), Douro Litoral, Portugal, Europe

travel destinations tranquillity waterfront tourist attraction sunny travel architecture urban outdoors day nobody horizontal contemporary photography color image cloud blue sky dom luis i bridge bridge douro river porto oporto douro litoral portugal europe douro river ornate arch arching riverbank cityscape building water sunshine metropolitan city outside daytime colour color sky european southern european south west europe eu eu european union portuguese elaborate intricate arc riverside skyline