Leftward view of Ponte de Sao Joao from a Rabelo boat with flags on Douro River

leftward view ponte de sao joao rabelo boat flags douro river railway bridge porto portugal panoramic river scene st johns bridge waterway nautical journey landmarks rabelo boat tradition waterfront panorama cultural sight river crossing maritime experience historic flag display newest brige urban river douro riverside portuguese landscape cultural heritage riverside view rabelo boatscape rivers edge porto cityscape architectural beauty historic bridge douro waters icon the city landmark view portos heart water journey urban beauty douro reflections nautical charm rabelo boat cruise scenic perspective portuguese city riverside adventure porto scene water panorama portos riverside allure edgar cardoso railroad bridge cloudy day