The $1-billion building, completed in 2009, was designed to be one of the most efficient and ecologically friendly buildings in the world. Technologies such as floor-to-ceiling insulating glass to contain heat and maximize natural light, an automatic daylight dimming system, and a greywater system, which captures rainwater for re-use, have earned it the title of Best Tall Building in America, according to the Council on Tall Buildings and Urban Habitat. Additionally, Bank of America states that the building is made largely of recycled and recyclable materials.
In 2010, the 55-story office building officially achieved Leadership in Energy and Environmental Design Platinum status from the US Green Building Council. It was the first building of its kind to do so.