The Sejong National Arboretum, which is about to open as the first urban arboretum in Korea, was built on an area of ​​65 ha adjacent to the Sejong Government Complex, where several government ministries are located. It is possible to see 2,834 species of 1.72 million plants (including 45,958 trees) under various themes such as the nation's largest four-season greenhouse, traditional Korean garden, Cheongryujiwon for study, and bonsai garden. It is another national arboretum established following the Baekdudaegan National Arboretum following the National Arboretum Expansion Plan for conserving and developing genetic tree resources by climate and vegetation zone.