The Emerald Necklace consists of a 1,100-acre chain of parks linked by parkways and waterways in Boston and Brookline, Massachusetts. It was designed by landscape architect Frederick Law Olmsted, and gets its name from the way the planned chain appears to hang from the "neck" of the Boston peninsula. In 1989, the Emerald Necklace was designated as a Boston Landmark by the Boston Landmarks Commission.

Brookline is a town in Norfolk County, Massachusetts, United States, and part of the Boston metropolitan area. Brookline borders six of Boston's neighborhoods: Brighton, Allston, Fenway–Kenmore, Mission Hill, Jamaica Plain, and West Roxbury. The city of Newton lies to the west of Brookline. Brookline was first settled in 1638 as a hamlet in Boston, known as Muddy River; it was incorporated as a separate town in 1705.