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rcial and industrial centre for the zone north of the Mondego River. The historic s of Porto was designated a UNESCO 🌞 World Heritage site in 1996. Pop. (2001) city, 1; metro. Porto | History, Population, Map, Climate, & Facts | Britannica recomcommend hat any 🌞 visit to Porto should begin here, at its most famous square, Praa da Liberdade, |