Porto (Portuguese: Porto), a port city facing the Atlantic Ocean in northern Portugal with a population of 263000, is the second largest city in Portugal, the capital of Porto province and the administrative center of the northern region. The city has Porto, a famous football club in Portugal, and Porto concert hall, a famous building. Porto is composed of 15 parishes, bordering on Matosinhos and Maia autonomous regions in the north, gondomar in the East, the Duro River in the south, Vila Nova de Gaia on the opposite bank and the Atlantic Ocean in the West. Portugal's national name and polish wine are derived from this city. Its old city and surrounding wine producing areas are world cultural heritage.Porto is located in the northwest of the DORO estuary, about 5 km west of the Atlantic Ocean. Population 327000 (1981). More importantly, Porto is the distribution center of wine in the upper reaches of the Duro river. The quality of Porto wine is known as Portugal's "first ambassador". The main industries of Porto include shipbuilding, textile, cork, cotton and wool textile, leather making, pottery, cigarette, food, furniture, electrical appliances, machinery, chemical industry, fishery, etc. the liquor making industry is particularly developed. Porto is rich in "Porto" wine, which has a good reputation in the world and enjoys the reputation of "wine market". Due to its convenient transportation, as a railway and road hub and an important port of Portugal, Porto has become the economic center of northern Portugal. At the same time, it is also the industrial and commercial center of the area north of the montegu river. Porto, where Poland is located, accounts for 50% of the country's foreign trade and one third of the country's GDP.