6 dated entries naming Gyeongju, drawn from 6 separate years between 24 CE and 927 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.
24In the Kingdom of Silla, which compromises most of the eastern Korean peninsula, Yuri of the House of Park becomes the new monarch (the chachaung). King Yuri takes the throne at the capital, Seorabeo (now Gyeongju in South Korea) upon the death of his father, King Namhae.source
7th century
637Queen Seondeok of Silla (Korea) builds an astronomical observatory near Gyeongju (Cheomseongdae), one of the oldest in East Asia.source
647A stone tower astronomical observatory (named Cheomseongdae) at Gyeongju is constructed in Silla (South Korea) around this time.source
8th century
751Kim Daeseong, chief minister of Silla, orders the construction of the Bulguksa and Seokguram temples at Gyeongju (South Korea).source
10th century
924August – In what is now South Korea, at Seorabeo (now Gyeongju in South Korea), Gyeongae becomes the new monarch of the Kingdom of Silla upon the death of his older brother, King Gyeongmyeong.source
927Later Baekje, one of the Later Three Kingdoms of Korea, sacks the Silla capital at Gyeongju. King Gyeongae commits suicide and Gyeongsun is placed on the throne by the Later Baekje king Kyŏn Hwŏn.source