The Korea National Arboretum (KNA) is situated in Gwangneung Experimental Forest and contains the Forest Museum where all the information on forestry is exhibited. The construction of the arboretum and museum took place on October 25, 1985 and opened on April 5, 1987. In order to preserve the forests, weekends and holiday entrance were restricted, reservations were required 5 days in advance, and no more than 5,000 visitors were accepted per day. As diverse plants are gaining recognition worldwide, the research department formed the Office of Forestry on May 24, 1999.

Korea National Arboretum covers an area of 1,157㏊ and contains 15 specialized forests, including Conifer Garden, the Garden of Ornamental Trees, and the Aroma and Touch Garden. The Forest Museum is the largest in Asia, covering 4628 sq.m² with a traditional Korean design, and the interior and exterior are both constructed of wood and stone. The arboretum facilities consist of 5 exhibition halls (Living Forest, Forest and Man, Forestry of the World, Forestry of Korea, Nature of Korea), a Herbarium, a Special Exhibition Room, and an Audio Visual Hall.