The Lyon Arboretum is a 193-acre botanical garden located in Honolulu, Hawaii. It is part of the University of Hawaii and features a diverse collection of tropical plants, including native Hawaiian species and exotic varieties. The arboretum serves as a research facility and educational resource, promoting conservation and understanding of plant biodiversity. Visitors to the Lyon Arboretum can explore numerous walking trails, lush landscapes, and themed gardens. The site also offers guided tours and workshops, making it a popular destination for nature enthusiasts, students, and tourists interested in learning about Hawaii's unique flora.