Kunming is the capital of the Yunnan Province in southwestern China. It is situated in the east-central part of the province in a fertile lake basin on the northern shore of Lake Dianchi, surrounded by mountains to the north, west, and east. The Yunnan Ethnic Village next to Dianchi Lake is a theme park that displays the various folklore, culture, and architecture of 26 ethnic groups in the Yunnan Province, the main ones being the Han and Yi tribes. It is classified as an AAAA-class tourist attraction. Some 60 miles (100 km) southeast of the city is the Shilin or Stone Forest, a karst formation, consisting of rock caves, arches, and pavilions; a popular tourist destination, it was collectively designated a UNESCO World Heritage site in 2007.