North Region, Portugal

North Region is the most populous region in Portugal, higher population than Lisboa, and the third largest by area. 3,576,205 people live in this region according to the 2017 census. It is one of five regions of Mainland Portugal, most people live in the urban area of Porto, with about one million living there. There are also people living in urban areas in Northwestern Portugal, like Braga and Guimarães.
Northern Portugal is a cultural region, it was first settled by various pre-Celtic and Celtic tribes before being visited by some Mediterranean civilizations who traded with the locals, including Greek, Carthaginians, Iberia was then invaded by the Romans and by Germanic peoples, and was attacked by the Moors, Berbers, Arabs and Vikings.
Geography.
Northern Portugal is a mountainous region. Locally known as "serras" include Serra do Gerês, Peneda, Marão and Soajo. There are some natural parks including the Peneda-Gerês National Park, Montesinho Natural Park, and the Alvão Natural Park.