interiors awards sustainable design elements reflecting the principles of biophilic design abound in the light-filled central atrium of the Federal Center south Building 1202 by ZGF architects. in the atrium are trees and other plants, rocks and boulders, and water features. sky bridges and open stairs connect upper levels, which contain open office space. 130 contractdesign.com january | february 2014http://www.contractdesign.com