europe, portugal, porto, city, european city, ribeira, old town, old city, square, landmark, river, douro, douro river, transport, ship, boat, tour, boat tour, personal, watercrafts, blue, two, yellow, metropolis, landmass, transportation, stream, district, journey, craft, port, 2, european country, vehicle, urban center, urban area, rectangle, travel
a boat on the Douro River in Ribeira in the city centre of Porto in Porugal in Europe.