The University of Arizona ENR2 Building is comprised of five stories of over-structure garden terraces. Each stratum represents the different plant communities surrounding the Tucson area; from the Ironwood Forest roof garden to the Yucca Grassland facade to the Sycamore canyon of southern Arizona at the floor of the atrium/canyon, creating a vertical ecosystem. Seeps with native ferns and mosses are strategically located in the shady areas on each floor with vines cascading from each floor into the central atrium/canyon space. All landscape beds and water feature/tinajas will be watered with reclaimed water collected from building condensate as well as rain and surface water. Solar chimneys flank each end of the building keeping the interior canyon cool. The hardscape design reflects the carved canyon walls and floors.