Aberdeen is the third most populous city in Scotland, the city is an important economic and administrative center of the region. The city's name, probably, derives from the name of the Aberdon settlement (literally means "the mouth of the Don"), which was on the site of the modern Aberdeen. The city is lies between the mouths of the Dee and Don rivers and located in the area of ocean climate, which is characterized by not cold, rainy winters and brief, cool summers. Aberdeen City includes the largest commercial and fishing port of the North Scotland, important sectors of the city economy are chemical industry, food industry, shipbuilding. After the exploration of oil deposits in the North Sea (1970th), Aberdeen became the center of the oil industry of the region. Aberdeen's architecture includes numerous buildings of XV-XIX centuries, among the city buildings Victorian architecture is dominated, a lot of buildings made of local gray granite interspersed with shiny mica, for this reason Aberdeen is often called the "Grey City".