The Ball State Center for the Environment, a design problem posed in the Arch 401 Cripe Competition, embodies the University's continued dedication to sustainable construction and environmental excellence. The building houses a sustain ability and environmental studies library, an auditorium, classrooms and offices and contains sustainable technologies such as multiple green and habitable roofs, photovoltaic panels, a living machine, natural ventilation and daylighting and a solar water heater. These spaces provide students with an opportunity to inhabit and interact with environmentally responsible building techniques. In order to objectively assess the sustainability of my design solution, I have used the LEED (Leadership in Energy and Environmental Design) ranking system.