Hwaseong Fortress is a fortified wall surrounding the city of Suwon, South Korea. It was built in the late 18th century by King Jeongjo of the Joseon dynasty to honor and house the remains of his father, Prince Sado. The fortress covers an area of about 5.7 kilometers and has a length of 5.52 kilometers.

Hwaseong Fortress features four gates, numerous pavilions, and command posts. The walls and structures are made of stone and brick, and the fortress also includes a series of military facilities such as barracks, artillery positions, and ammunition depots. One of the most notable features of Hwaseong Fortress is its watchtowers, which were designed to provide a clear view of the surrounding area to guard against enemy attacks.

In 1997, Hwaseong Fortress was designated as a UNESCO World Heritage Site, in recognition of its historical significance and architectural value. The fortress is open to the public and attracts a large number of visitors each year who come to explore its impressive structures, enjoy the scenic views, and learn about Korea's rich history.