Samneung meaning "three royal tombs," has strong ties to history. The three royal tombs house three kings of the Silla Kingdom: King Adala (8th King of the dynasty), King Sindeok (53rd) and King Gyeongmyeong (54th).

King Adala, who cared deeply for his people, went to war after his citizens were abducted by the invaders of Baekje. But when Baekje asked for a peace treaty, King Adala released the prisoners he took during the engagement. During his rulling, a  kingdom in Japan sent an envoy to ask for friendly relations with Silla. King Adala’s tomb is 58m in circumference at the base, 5.4m in x_height and 18m in diameter.

When King Hyogong died without any heirs, the people of the kingdom crowned his son-in-law as their next king – King Sindeok. During his reign, King Sindeok devoted himself to protecting his kingdom from invasions by Gyeonhwon and Gungye. The royal tomb is 61m in circumference at the base, 5.8m in x_height and 18m in diameter. It was robbed twice, inviting investigations in 1953 and 1963. The investigations revealed the tomb to be a chamber made of stone.

King Gyeongmyeong, the son of King Sindeok, together with Wanggeon, the founder of the Goryeo dynasty, successfully defeated Gyeonhwon’s attack against Daeyaseong Fortress. During his reign, he attempted to establish diplomatic relations with the Hudang dynasty of China, but was unsuccessful. The tomb is 50m in circumference at the base, 4.5m in x_height and 16m in diameter.