View of the Mosteiro da Serra do Pilar and Dom Luís I Bridge in Porto, Portugal during daylight

porto portugal monastery serra do pilar dom luis i bridge architecture historic bridge river skyline cityscape europe landmark travel tourism ancient heritage scenic buildings structure aerial view city old european traditional landscape famous cultural outdoors monument sightseeing iconic city view travel destination historical site panorama daylight urban scenic view picturesque city landmark sky rooftops portuguese historical building skyline view dusk evening