The tomb of King Munseong is on the south side of Seondosan in Seoak-dong, Gyeongju. It is identified as the burial mound of the 46th king of Silla and was designated a historic site in 2011. The round earthen mound is 18.9 m in diameter and 4.5 m high, and it stands together with the tomb of King Heonan. It is not much of a tourist destination.