Open Tue - Sun, last admission one hour before closing.
March - October: 6 a.m. -9 p.m.
November - February: 6:30 a.m. - 9 p.m.
Adults: KRW 1,000
Children and Youth (7-18): KRW 500
Free for children (under 6) and seniors (over 65).
Wikipedia https://ko.wikipedia.org/wiki/선정릉
Official website http://jikimi.cha.go.kr/english/royal_palaces_new/Seonjeongneung.jsp?mc=EN_05_02_06
More information on whc.unesco.org http://whc.unesco.org/en/list/1319
전화 +82 02-568-1291
좌표 37°30'31.307" N 127°2'56.767" E