When we first visited Gyeongbokgung Palace, we realized that it’s closed on Tuesdays. So please don’t make the same mistake! I should’ve checked beforehand. Newbie mistake ^^;; We took either the 402 or 405 bus there. It’s very accessible and close to Insadong and Bukchon Village as well. Admission price is only ₩3,000 for adults. The palace opens at 9am, but closing time varies according to when you visit. Double check the web site to make sure.