Pungnap-dong Earthen Fortress

Pungnap-dong Earthen Fortress is a flat-land fortress built of packed earth during Baekje's Hanseong period, notable for its boat-like shape.

Today only about 2.7km remains, since the western wall facing the Han River has eroded away, but the original circumference is estimated at around 3.7km — larger and grander than Goguryeo's Guknaeseong or Silla's Wolseong. The wall originally stood 10.8m high, and after two rounds of expansion, reached as high as 13.3m at its largest.

During the great flood of 1925, artifacts belonging to the upper class — bronze braziers, belt ornaments — were unearthed here, leading scholars to identify the site as Hanam Wiryeseong. It was designated Joseon Historic Site No. 27 in 1936 and became a nationally designated historic site in 1963.

The sheer fact that a fortress wall of this scale survives in the middle of an already-developed urban area is remarkable in itself. Walking the path built atop the wall lets you feel the grandeur of Baekje's royal capital literally underfoot.