Green roofs atop the new U.S. Census Bureau Headquarters Building provide natural insulation, minimize rainwater runoff and improve outside air quality. They also offer a sensational view for upper floor occupants and provide for a pleasant walk between the two wings of this sprawling complex.

The new U.S. Census Bureau Headquarters at Suitland Federal Center, Suitland, Md., is a state-of-the-art facility, designed and built to provide a world-class workplace for 6,000 of “America’s Fact Finders.” The complex is one of the most impressive buildings in the General Services Administration’s (GSA’s) portfolio, with sweeping curves and glass cladding with vertical wooden louvers. And it is not short on green space, either.