Emerald Necklace : Frederick Law Olmsted of Central Park fame designed this gem including the flowery Arnold Arboretum .
This gem is a lanky chain of nine green parks that stretches for more than seven miles covering 1,200 miles of parkland .
Emerald Necklace : Frederick Law Olmsted of Central Park fame designed this gem , a lanky chain of nine green parks that stretches for more than seven miles covering 1,200 miles of parkland , including the flowery Arnold Arboretum .