The Children's Museum at Seoul Museum of History offers free online group bookings for children aged 6–13. The detailed rules say 10–50 children per group. For weekday sessions 1 and 2, the museum describes a combined capacity of 70: 50 group visitors, ten individually booked visitors and ten walk-ins. Weekends and public holidays are reserved mainly for individual visitors.
The November reservation window is listed as October 1 at 2 p.m. through November 30 at 11:59 p.m. A special sharing session on Friday, November 13, limits the group quota to 18 for session 1 (10–11:30 a.m.). Reservations are automatically cancelled once 20 minutes have elapsed after a session starts. Telephone the museum ahead if running late. Children cannot enter without adult escorts. Register under the lead adult's name, check the automated booking confirmation, and reserve no more than one session per day.
The page header says 2–50 per application, which conflicts with the detailed minimum group size of ten. Ask the museum to clarify. Address: 55 Saemunan-ro, Jongno-gu, Seoul; accessible from Gwanghwamun Station Exit 1 or Seodaemun Station Exit 4 (Line 5). Enquiries: 02-724-0299.