Imjonseong Fortress
예산 임존성 · Chungnam · Palaces & heritage
Imjonseong Fortress (also known as Daeheungsanseong Fortress) is located at the top of Bongsusan Mountain between Yesan-gun and Hongseong-gun in Chungcheongnam-do. This stone fortress was designed as a place to launch attacks against enemies. One of the ways in which those in the fortress fended off intruders was to unleash the water from the giant fortress well and let it gush down the mountain towards the oncoming forces. · · The fortress wall is about 2.5 meters high and 3.5 meters wide and has a 7 to 8-meter ditch that runs alongside the southern wall. Compared with other Korean fortresses, Imjonseong Fortress is higher and about 2 meters thicker. It is the largest fortress of the Baekje Kingdom and has become the subject of much research. · · History shows that the fortress was the central hub of the Restoration Movement of the Baekje Kingdom (18 BC - AD 660). In the 20th year of the reign of King Uija (Baekje dynasty), the kingdom was defeated by the united forces of the Silla Kingdom and the Tang dynasty (currently, China). Boksin (a cousin of King Uisa), a monk, and Heukchisangji stayed at the fortress for three years while trying to return the king to power. · · As one walks along the winding trail, the view of Daeryeonsa Temple comes in to view and as once at the top, the spectacular views of Oseosan, Baekwolsan, and Gayasan mountains unfold. Those who come to the fortress from Masa-ri, Gwangsi-myeon, can drive and park their car in the parking lot located right below the fortress.
| Type | Palaces & heritage |
|---|---|
| Region | Chungnam |
| Address | San 28 Masi-ri, Yesan-gun, Chungcheongnam-do |
Getting there
On nearby while you're here
Events run on fixed dates — check these against your own trip. Trip Planner shows everything on for the days you are in Korea.
- Nov 7, 2026 – Nov 8, 2026Brotherly Love Festival
- Oct 30, 2026 – Oct 31, 2026Yesan Apple Festival
- Oct 29, 2026 – Nov 1, 2026Hongseong Global BBQ Festival
Nearby places
Historic Site Related to Seong Sam-mun
Statue of General Kim Jwajin
Hongju Millennium Monument
Surichigol Holy Ground
Hongseong Gujeoram Hermitage (구절암(홍성))
Hongseong Seongyeonsa Temple (석련사(홍성))
Korea Traditional Architecture Museum
