The Elm Bank Horticulture Center, home of the Massachusetts Horticultural Society, occupies of Elm Bank Reservation, a 175acre recreational area of woodlands, fields, and former estate property on the Charles River managed by the Massachusetts Department of Conservation and Recreation. The estate's entrance is located at 900 Washington Street (Route 16), Wellesley, Massachusetts, United States, with the major portion of the grounds located in the neighboring town of Dover. In 1987, the entire site was added to the National Register of Historic Places as Elm Bank.