Hongjuseong History Museum at 20 Amun-gil, Hongseong, Chungnam explores local history beside the fortress. KTO's March 11, 2026 update lists 09:00–18:00 March–October and 09:00–17:00 November–February, free admission and Monday closure. It also lists five accessible parking places at the fortress car park, two free strollers, a ramp, lift and changing table.