Six parks now known as the Emerald Necklace created by Frederick Law Olmsted, Sr. The Back Bay Fens, Riverway, Olmsted Park, Jamaica Park, Arnold Arboretum and Franklin Park stretch five miles from the Charles River to Dorchester and make up over 1,000 acres of parkland.

The Necklace comprises half of the City of Boston’s park acreage, parkland in the Town of Brookline, and parkways and park edges under the jurisdiction of the Commonwealth of Massachusetts. More than 300,000 people live within its watershed area.