Hanna Arboretum is located at 72 Liandong Arboretum Road, Jeju Island, South Korea. Close to the Chinese Consulate General in Jeju. Hanna Arboretum is on the popular list of local attractions in Jeju, with nearly 1,000 subtropical plants and self-grown trees on Jeju Island. The arboretum is like a big park with beautiful scenery and fresh air. Worth going.