The city of Porto is the second-largest city in Portugal, after Lisbon, and one of the major urban areas in Southern Europe. Its administrative limits (an area of 41.66 km²/16 sq.mi) include a population of 237,584 (2011) inhabitants distributed within 15 civil parishes.
The urban area of Porto, which extends beyond the administrative limits of the city, has a population of 1.3 million (2011) in an area of 389 km² (150 sq mi), making it the second-largest urban area in Portugal. Located along the Douro river estuary in northern Portugal, Porto is one of the oldest European centres.
The variety of monumental and artistic patrimony and the Port Wine cellars were some of the reasons why UNESCO classified the city as World Heritage, in 1996. Some of the city highlights include the Sé Cathedral, a neoclassical Stock Exchange, the Portuguese Manueline-style Church of Santa Clara, the Port Wine cellars, the D. Luís I Bridge, the S. Bento Station and Casa da Música.
Porto is growing as a tourism and business destination, receiving 2,5 millions of passengers each year. It has an intense cultural and social life and the city shared the designation of European Capital of Culture in 2001.
You can find more information in Porto Tourism Guide website.