europe, portugal, porto, city, european city, ribeira, old town, old city, square, landmark, river, douro, douro river, brown, roofs, aerial, boats, photography, metropolis, landmass, stream, district, urban area, aeriform, roof, craft, urban center, rectangle, ethereal, vehicle, protective covering, european country, port, boat
the old town on the Douro River in Ribeira in the city centre of Porto in Porugal in Europe.