Arnold Arboretum of Harvard University

Boston, United States

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The Arnold Arboretum of Harvard University in Boston, United States, is a 281-acre living museum and botanical research institution dedicated to the study and conservation of temperate woody plants.

Founded in 1872, it is the oldest public arboretum in North America and was designed in collaboration with Harvard botanist Charles Sprague Sargent and landscape architect Frederick Law Olmsted. The arboretum features over 15,000 accessioned trees, shrubs, and vines, with a focus on species from eastern North America and eastern Asia.

It serves as a major scientific research center with extensive collections that support global botanical study and public education. Open daily to the public for free, it offers scenic walking trails, historic landscapes, and seasonal plant displays, including a renowned lilac collection celebrated each spring.

The Arnold Arboretum is a key component of Boston's Emerald Necklace park system and a vital institution for plant science and conservation.​