Seoul Museum of History takes reservations for groups of 20 to 100 at its main building through the city's public reservation service. The official listing says group visits are free and booked first-come. Apply by 18:00 on the day before the visit and cancel no later than the day before.
The booking service is listed through December 31, 2026, but that does not mean every date has open capacity. Teachers and tour organisers should confirm the group size, arrival time and purpose, then check the live calendar for their preferred date. Enquiries: 02-724-0274.