Bursa is a city in northwestern Turkey and the seat of Bursa Province. The population of city is about 2 million. It has a mixed humid subtropical climate (Köppen climate classification: Cfa) and a hot-summer Mediterranean climate (Köppen climate classification: Csa). Bursa is the fourth largest city, and also one of the most industrialized cities in the country. Sometimes the city is called "Yeşil Bursa" which means "Green Bursa" because of the large parks, forests and gardens in the urban area of the city. Bursa is home of Uludağ University. Uludağ is an important ski resort in Turkey and is a national park to protect the nature in the mountainous area.