Suwon (Korean: 수원; Hanja: 水原; lit. Waterfield, Korean pronunciation: [sʰu.wʌn]) is the capital and largest city of Gyeonggi-do, South Korea's most populous province which surrounds Seoul, the national capital. Suwon lies about 30 km (19 mi) south of Seoul. It is traditionally known as "The City of Filial Piety". With a population close to 1.3 million, it is larger than Ulsan, although it is not governed as a metropolitan city.