- First published
- Oct 14, 2026
Cheonan Hong Dae-yong Science Museum
An astronomy and science museum in Susin-myeon, Cheonan, exploring the scientific thought of Hong Dae-yong and celestial observation. Exhibition halls, the planetarium and observatory have different entry conditions. The city ordinance lists general exhibition hours as 10:00–18:00; verify individual sessions and reservations.
- Address
- 113 Jangsanseo-gil, Susin-myeon, Dongnam-gu, Cheonan-si, Chungcheongnam-do, Republic of Korea
- Hours
- Under the city ordinance, standard exhibition hours are 10:00–18:00. Observatory and planetarium sessions have separate schedules, ticketing and reservation requirements. A secondary guide reports a Monday-opening pilot in September–December 2026, but the original notice could not be independently reopened; confirm current opening and night programs with the museum.
Visitor details are improved for families considering astronomy observation. A secondary October 2026 guide reports a September–December Monday-opening pilot, but the original city notice could not be reopened; confirm the actual Monday schedule directly with the museum.
Why go
Connect Korean scholar Hong Dae-yong's interest in astronomy with modern exhibits and observation facilities. Check separate hours, fees and reservation conditions for exhibitions, planetarium and night viewing.
Plan the visit
Use the confirmed place facts below, then continue to the broader travel guides for transport, facilities and eating practicalities.