Hanseong Baekje Museum's second-half 2026 family class, 'Find the Secrets of the Baekje Royal Fortress,' explores excavations at Mongchontoseong and everyday life in Baekje's Hanseong era. It runs on Saturdays from 12 September to 5 December, with two sessions, 13:30–15:30 and 15:40–17:40. Families must choose only one session per day. A primary-school-aged child or older must attend with at least one immediate-family guardian. Each family registers as one team; the reservation screen lists 14 first-come teams per session, with two to four people per team. Friends, extended relatives and splitting one family into multiple bookings are not permitted. The free program takes place in Basement Level 2, Education Rooms 1 and 2. Book online through Seoul Public Service Reservation for the chosen date. One part of the official page says booking opens at 10:00 fifteen days before class and closes at 10:00 the previous day, while another refers to 10:00 on the Friday two weeks earlier. Check the specific session's booking calendar. Cancellations are allowed up to two days before the class; cancellations on the preceding day or the day itself may restrict participation in the same program for six months. The museum is at 71 Wiryeseong-daero, Songpa-gu, Seoul, near Olympic Park's South Gate 2.