Haeundae Arboretum's 'Forest to Unwind' programme invites adults to experience the sounds, scents and textures of the woods. The Busan booking portal lists Thursdays, a programme period of May 14–November 26, 2026 and an application window of March 25–November 30. The later application deadline does not establish additional sessions after November 26. Online and telephone registration are listed; enquiries: 051-888-7146. Membership is recommended to retrieve and cancel reservations. A session may be cancelled if fewer than five people participate. The page header says cancellations are due five days before the activity, while the body says three days; confirm the applicable rule with the operator before committing.