There are 35 royal tombs and 155 tumuli in central Gyeongju, and 421 tumuli in the outskirts of the city. Silla burial mounds built after the period of the Three Kingdoms are found in central Gyeongju, including tumuli in the districts of Noseo-dong, Nodong-dong, Hwangnam-dong, Hwango-dong and Inwang-dong. Western Gyeongju has the tomb of King Muyeol in Seoak-dong, nearby tumuli in Chunghyo-dong and the tomb of Kim Yu-sin. The tombs of Queen Seondeok, King Sinmun, King Hyogong and King Sinmu are at the base of Namsan mountain while the tombs of King Heongang, King Jeonggang, King Gyeongmyeong and King Gyeongae are on the slopes of the mountain. In addition to the tombs, tumuli have been found surrounding Namsan mountain and in the western part of Geumgang mountain. Artifacts excavated from the tombs of Geumgwanchong (gold crown tomb), Seobongchong (western phoenix tomb), Cheonmachong (heavenly horse tomb) and northern and southern parts of Tomb No. 98 are good examples of Silla culture.