This pair of roof end tiles, sumaksae (convex tile) with a peony design and ammaksae (concave tile) with a vine design, displays some of the characteristic features of the Goryeo celadon ware of the 12th century. The translucent jade blue glaze of the celadon tiles would have created stunning brilliance and noble beauty for a fine work of palatial architecture for the medieval Korean kingdom of Goryeo (918-1392). According to Goryeosa (The History of Goryeo), King Uijong built a royal villa named. “Yanguijeong” with celadon roof tiles in 1157. The celadon fragments discovered at the site of the Goryeo’s royal palace in Manwoldae, Gaeseong, as well as a celadon tile found at an old kiln site of Sadang-ri, Gangjin, Jeollanam-do reveal that the record should be true. In 2009, the National Museum of Korea restored the celadon-roofed pavilion at Geoulmot in the museum as part of the celebration for the centenary of the first museum in Korea.