The Rose Fitzgerald Kennedy Greenway opened in October 2008 atop the Big Dig, the country’s most expensive highway project, in the heart of Boston. The 17-acre Greenway, named after Rose Fitzgerald Kennedy, features plazas and a tree-lined promenade. The matriarch of the Kennedy Family was born in the neighboring North End neighborhood. Her son, former Sen. Ted Kennedy, a liberal from Massachusetts, was instrumental in establishing the Greenway.