Cheonan Seonggeosan Mountain Wiryeseong Fortress

Onjo, the founder of Baekje, left Jolbon Buyeo and came to Jiksan (in present-day Jiksan-myeon, Cheonan, Chungcheongnam-do), where he first established a capital and founded his kingdom; the old name of Jiksan was Wiryeseong. Both the Samguk sagi and the Samguk yusa call it "Jiksan Wiryeseong," and this was indeed the first capital of Baekje. The Wiryeseong on Seonggeosan Mountain is a temoe-sik fortress, a type built by encircling a mountain's summit, and together with the nearby Seonggeosanseong and Sasanseong fortresses it is thought to have served a defensive purpose. The fortress wall runs 950 metres in circumference, enclosing an area of 5,700 square metres. The Dongguk yeoji seungnam records that the fortress measured 1,690 cheok, a traditional unit of length, and had a single well within it, and it also records that in the 13th year of King Onjo's reign (5th century BC) the capital was moved from this place to the Gwangju area of Gyeonggi-do.

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Where it is

Region

Cheonan, Chungnam

Designation

Provincial Monument · 시도기념물