This stupa was dedicated to National Preceptor Hongbeop of the Goryeo Dynasty and was originally located in Jeongtosa Temple in Jungwon, Chungcheong Province. For now, it is located in the National Museum of Korea.

Hongbeop was appointed as Royal Mentor by King Seongjong of the Goryeo Dynasty after studying in Tang China. He played a critical role in introducing Zen Buddhism to Goryeo during the upheavals of the late Silla and early Goryeo period.

Upon taking a closer look at the stupa, one can see lotus flowers engraved on both the upper and lower base stones, and a dragon sophisticatedly chiseled on the middle part of the upper base stone. The most noteworthy feature of this stupa is its main body, which is oval like an egg with flower designs on a crisscross pattern. This stupa was created using new methods, though it does retain the typical octagonal style of the Silla period.

It is believed to have been erected in around 1017, the eighth year of King Hyeonjong of Goryeo, when National Preceptor Hongbeop passed away. This national treasure, often referred to as “aldok” (“eggshaped jar”) in Korean, is the representative stupa of the Goryeo period and gives a harmonious feeling with its delicate and simple patterns.