The Seoul City Wall is a historic fortification that once surrounded the city of Seoul, South Korea. Built during the Joseon Dynasty in the late 14th century, it was designed to protect the city from invasions. The wall stretches approximately 18.6 kilometers and includes several gates, watchtowers, and scenic viewpoints. Today, the Seoul City Wall is a popular tourist attraction and a UNESCO World Heritage Site. Visitors can walk along various sections of the wall, enjoying panoramic views of the city and learning about its history. The wall serves as a reminder of Seoul's rich cultural heritage and architectural significance.