Seoul City Wall (Hanyangdoseong)

The fortress walls that surrounded Hanyang, the Joseon capital, built by Taejo Yi Seonggye to defend the capital after moving there. The walls run along the ridgelines connecting Bugaksan, Inwangsan, Naksan, and Namsan mountains. The manner of construction changed over the ages, and the shape and size of the stones allow one to read changes in the periods of construction. The well-maintained fortress promenade trail that looks down over the city center is beloved as a spot for walks and night views.