The Seoul City Wall, known as Hanyangdoseong, is a significant historical fortification originally built in 1396 to protect the capital of the Joseon dynasty. This ancient wall encircles the heart of modern Seoul and has been preserved as a testament to the city's rich heritage. Visitors can explore various trails along the wall, each offering a unique perspective of the city's past and present. The wall was designated as a Historic Site of South Korea in 1963 and continues to be a popular attraction for both locals and tourists alike.