in Chicago and the Sears Tower, also in Chicago. The building features a "green" (energy-efficient) dual glass curtain wall construction, making it among the first buildings in Boston to win national LEED (Leadership in Energy and Environmental Design) certification. On April 28, 2004, the then-head of Manulife's Boston operations announced that the building would be renamed the "John Hancock Building." According to Manulife, this is not quite correct; the building, completed in fall of 2004, will house the John Hancock Wealth Management Group and will bear conspicuous "John Hancock" exterior and interior signage featuring the John Hancock logo. However, the company will refer to the building simply as "601 Congress." , Emporis lists the official name of the building as the "Manulife Tower". References Landmarks in Back Bay, Boston Office buildings in Boston Landmarks in Financial District, Boston