Weather, Outdoors, Fog, Landscape, Scenery, Mist, Smoke, Tree, Plant, Aerial View, Land, Smog, europe, portugal, porto, douro, douro valley, douro river, valley, portugal river, rio, rio douro, entre os rios, town, village, old town, old village, architecture, alley, house, building, city, gathering, landmass, dwelling, small town, district, urban area, community, rio de janeiro, port, street, european country, settlement, housing, road