Places
- First published
- Oct 15, 2026
Samnyeonsanseong Fortress, Boeun
Samnyeonsanseong is a stone-walled Silla mountain fortress first built in 470. The Samguk Sagi records the explanation that it took three years to complete, as well as repairs in 486. Its total wall circuit is about 1,700 m.
- Address
- 104, Seongju 1-gil, Boeun-eup, Boeun-gun, Chungcheongbuk-do (충청북도 보은군 보은읍 성주1길 104, 어암리).
- Hours
- Current opening hours, closures and admission charges are unverified. Confirm access and on-site safety conditions before travelling.
An academic entry from the Academy of Korean Studies confirms the construction dates, setting and address. Present-day access and entrance conditions have not been verified.
Why go
Discover how a Silla fortress used both ridgelines and a valley for defense, while examining surviving and restored masonry.
Practical Korea
Plan the visit
Use the confirmed place facts below, then continue to the broader travel guides for transport, facilities and eating practicalities.
Getting thereFind directions on NAVER Map ↗104, Seongju 1-gil, Boeun-eup, Boeun-gun, Chungcheongbuk-do (충청북도 보은군 보은읍 성주1길 104, 어암리).
Nearby facilities & servicesOpen guide →Current opening hours, closures and admission charges are unverified. Confirm access and on-site safety conditions before travelling.
Food & eatingOpen guide →
Area guideOpen guide →