Porto and the Douro River, Norte, Portugal, Europe

photography vertical color image travel travel destinations outdoors day incidental people marina boat water waterfront porto douro river river cityscape city urban scene high angle view cloud sky waterfronts seaside seaboard seafront seashore waterside seacoast shore shores shoreline coastline coast coastal coasts coastlines travel destination tourist destination tourist destinations rivers flowing water outdoor outside marinas boats harbors harbour harbours daytime cities urban nautical vessel nautical vessels transport transportation