It is the oldest public arboretum in North America, founded in 1872.
The Arboretum's lilac collection is one of the most significant in North America and is celebrated annually during 'Lilac Sunday'.
Frederick Law Olmsted, who designed Central Park, created the original master plan for the Arboretum.
The Bonsai and Penjing Collection, housed in the Hunnewell Building, includes specimens that have been in the collection since the early 20th century.
All trees and plants in the collections are meticulously cataloged with permanent labels featuring their scientific names and geographic origins.
The grounds serve as a permanent laboratory, and visitors often encounter field researchers collecting data for climate and ecological studies.
The 'Peters Hill' summit stands at 240 feet, providing one of the best elevated natural vantage points for viewing the Boston metropolitan area.
The Arnold Arboretum is a 281-acre landscape designed by Frederick Law Olmsted that functions as both a public park and a premier botanical research institution. It serves as a major component of Boston's Emerald Necklace park system. The living collection includes over 15,000 individual plants representing roughly 4,000 distinct taxa. Managed through a partnership between Harvard University and the City of Boston, it maintains a massive archive of woody plants from temperate climates worldwide. The grounds feature diverse terrain including meadows, wetlands, and the prominent Peters Hill, which offers expansive views of the Boston skyline. It is designated as a National Historic Landmark. The facility serves as an active research site for dendrology and horticulture, not merely a recreational space.
The summit of Peters Hill during sunset for a panoramic shot of the Boston skyline framed by specimen trees.
Use the 'Arnold Arboretum Navigator' mobile web app to identify specific trees and find blooming highlights during your visit.
Wear sturdy walking shoes, as the landscape includes significant elevation changes and unpaved, rustic trails.
Bring your own water and snacks, as there are no food vendors located within the park boundaries.
Attempting to walk the entire 281-acre property without a map or designated route, as the perimeter is larger than most visitors anticipate.
Open daily throughout the year from sunrise to sunset.
No climbing trees, harvesting specimens, or walking dogs off-leash. Bicycles are only permitted on the main paved paths.
