thumb|A group of tourists walks along the fortress walls (2006). Samnyeonsanseong (), or Samnyeon Sanseong Fortress, is the ruins of a walled Korean fortress located in Boeun County, North Chungcheong Province, South Korea. It was built beginning in the year 470, during the Silla period.
thumb|A group of tourists walks along the fortress walls (2006). Samnyeonsanseong (), or Samnyeon Sanseong Fortress, is the ruins of a walled Korean fortress located in Boeun County, North Chungcheong Province, South Korea. It was built beginning in the year 470, during the Silla period.
On May 25, 1973, it was made Historic Site of South Korea No. 235. The fortress has been registered by the South Korean government on the tentative list of sites awaiting approval as a UNESCO World Heritage site.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).