Kronsberg, a suburb of Hannover, Germany, was developed beginning in 1995 as a model of sustainable urban planning and construction. The development incorporated [1] compact neighborhoods connected by public transit and bike paths, [2] energy-efficient buildings and renewable energy sources, and [3] abundant green spaces. Now home to over 7,000 residents, Kronsberg has achieved significant reductions in energy use and waste through its innovative planning and emphasis on public health, transportation, and environmental protection.