West Lake, also known as Xihu and by other names, is a freshwater lake in Hangzhou, China. Situated to the west of Hangzhou's former walled city, the lake has a surface area of 6.39 km (2.47 sq mi), stretching 3.2 km (2.0 mi) from north to south and 2.8 km (1.7 mi) from east to west. In the lake are four causeways, three artificial islands, and Gushan, the only natural island. Gentle hills surround the lake on its north, west, and south sides, with the Leifeng and Baochu pagodas standing in pair on the south and north banks. Several famous temples are nestled in the mountains west of the lake, including Lingyin and Jingci Temples.
A tourist attraction since the Tang dynasty (618–907), the lake has influenced poets and painters throughout Chinese history for its natural beauty and historic relics. By the Song dynasty (960–1279), during which the dynastic capital moved to Hangzhou, it had become a cultural landmark and one of the most visited tourist destinations of China. Introduced to Europeans by Marco Polo, the lake was once a symbol of Chinese urban culture. It has been featured on Chinese currency, including the one-yuan banknote in the 1979 Bank of China Foreign Exchange Certificate and the 2005 Renminbi, as well as in the Chinese passport. A UNESCO World Heritage Site since 2011, the lake is recognised to have influenced garden designs in China, Japan, and Korea over the centuries as "an idealised fusion between humans and nature."