Hwaseong Fortress is a stunning example of late 18th-century military architecture situated in Suwon, South Korea. This fortress was constructed from 1794 to 1796 and was commissioned by King Jeongjo of the Joseon Dynasty to honor and house the remains of his father, Prince Sado. The fortress features a unique blend of Eastern and Western architectural styles and was designed by the notable engineer and architect Jeong Yak-yong. Hwaseong Fortress encompasses both flat land and hilly terrain, which influenced its strategic defensive design, including the innovative use of science and technology. It comprises massive walls that stretch for nearly 6 km, incorporating four main gates, watchtowers, bastions, command posts, arrow launcher towers, and firearms bastions, strategically positioned along the walls. The fortress has been recognized as a UNESCO World Heritage site for its historical significance and well-preserved state. It represents not only a peak in fortress construction but also the societal, political, and cultural changes of its time. Nowadays, the fortress is a popular tourist destination, hosting various cultural events and festivals, and is emblematic of Suwon's history and identity.