Sustainability is the guiding design concept of this corporate headquarters that preserved its wooded setting for the benefit of both the environment and the employees. "It is beautifully integrated into the natural surroundings, especially for such a modern, geometric building," commented jurors; "even the overhangs take on the character of a tree canopy." The architects have created a loft-like aesthetic that has practical as well as environmental benefits. High ceilings and expansive glazing create a strong visual connection with the outdoors; king-post trusses with 50-foot spans create column-free, flexible office space; exposed structural and mechanical systems eliminate the need for many interior finish materials. "Green" construction techniques included placing the construction crane within the facility footprint and building outward, and later replanting much of the displaced vegetation, including 22 trees. Many of the building components included high percentages of recycled materials: 88 percent of the steel structure; 30 percent of the aluminum in the curtainwall; and 69 percent of the ceiling tile.