Hwaseong Fortress or Suwon Hwaseong is a fortification surrounding the centre of Suwon, the provincial capital of Gyeonggi-do, in South Korea. It was built from 1794 to 1796 by King Jeongjo of the Joseon Dynasty to house and honour the remains of his father, Prince Sado. Sado had been executed by being locked alive inside a rice chest by his own father King Yeongjo after failing to obey a command to commit suicide. Located 30 kilometres south of Seoul and enclosing much of central Suwon, the fortress includes King Jeongjo's palace Haenggung. The site was designated as a World Heritage site by UNESCO in 1997. Suwoncheon, the main stream in Suwon, flows through the center of the fortress.