The Emerald Necklace: Boston Common, Public Garden, Comm. Ave., Fens, Jamaica Pond, Arnold Arboretum, Franklin Park Boston, MA Along the Water | Gorgeous Residential | Historic | Iconic | Parks | Arboretum/Botanical Garden | Foliage | Iconic Parks | Lake Loops | Olmsted An Olmsted-designed linear park running 8 miles from the State House to Franklin Park. Highlights: Boston Common, Public Garden, Comm Ave. Mall, Fens, Riverway, Jamaica Pond, Arnold Arboretum, Franklin Park. Explore