Mongchontoseong Earthen Fortification of Seoul is a Historic Site 297 of Korea. It is the monument of early Baekje period, located in the south of Seongnaecheon Stream, a branch of Hangang River.
The wall was piled with mud according to the natural topograph, with a wooden fence around the fortification. With Pungnaptoseong Fortress and Ancient Tombs in Seokchon-dong in the vicinity, these carry great significance in historical value.
If you are interested in the history of Seoul and Baekje dynasty, pay a visit to Mongchon Museum of History right next to the compound. The museum features wide variety of monuments and remains of the place, and also offers free admissions to all visitors