The Arnold Arboretum is a renowned botanical garden and research institution located in Maryland, U.S.A. It is a part of Harvard University and is situated in the Jamaica Plain neighborhood of Boston. The arboretum spans over 281 acres and is home to a diverse collection of trees, shrubs, and woody plants from around the world. Visitors to the Arnold Arboretum can explore its well-maintained grounds, which feature a variety of themed gardens, walking paths, and open green spaces. The arboretum also serves as a center for scientific research and education, with numerous plant collections and research facilities on-site.