Located along the Douro river estuary in northern Portugal, Porto is one of the oldest European centres, and registered as a World Heritage Site by UNESCO
Porto, also known as Oporto in English, is the second largest city in Portugal and one of the major urban areas in the Iberian Peninsula. The urbanized area of Porto, which extends beyond the administrative limits of the city, has a population of 1.3 million, making it the second-largest urban area in Portugal.
One of Portugal's internationally famous exports, port wine, is named for Porto, since the metropolitan area, and in particular the adegas of Vila Nova de Gaia, were responsible for the production and export of the fortified wine.
Porto is one of Europe's most charismatic cities; it is a highly atmospheric place that has become known for its monuments by renowned architects (Gustave Eiffel's Dona Maria Bridge, Nicolau Nasoni's Clerigos Tower, Rem Koolhaas' Casa da Musica, or Siza Vieira's Serralves Museum)