https://www.worldatlas.com/articles/kaesong-historic-koryo-dynasty-sites-in-north-korea.html
Koryo Dynasty Historic Sites In Kaesong, North Korea
These 12 sites were inscribed on the UNESCO World Heritage list in 2013, spanning the Koryo historical timeline from the 900s AD until the 1300s AD.
koryo dynastyhistoric siteskaesongnorthkorea