- First published
- Oct 9, 2026
- Substantive editorial change
- Oct 7, 2026
- Practical facts checked
- Oct 9, 2026
- Translation updated (not a fact check)
- Oct 7, 2026
National Sejong Arboretum
A large urban national arboretum in Sejong that combines curated gardens, plant collections and year-round indoor and outdoor nature experiences.
Free admission is scheduled from October 7 through October 11, 2026. The same official October schedule lists special night opening on October 9–10, with last entry at 21:00 and viewing until 21:30. The broader 2026 night-opening program runs Fridays and Saturdays through October 31. These are temporary October conditions, not standard daily hours; check the live homepage before departure for any construction-related entrance change.
Why go
Useful for travelers who want a slower green day without leaving the city. It works well for families, garden enthusiasts and visitors pairing Sejong’s central park area with an indoor conservatory-style stop.
Plan the visit
Use the confirmed place facts below, then continue to the broader travel guides for transport, facilities and eating practicalities.