The 700-acre Mueller development redefined central Austin by creating a dynamic, diverse community on the brownfield site of an abandoned airport. The challenge of the site—the airport parking lot—turned out to have preserved native soils needed to re-create a 20-acre tallgrass prairie, one of the most threatened ecosystems in North America. Working with RVi, sustainable practices included re-using native soil, re-introducing native species and salvaging existing native plants. This neighborhood greenway not only provides prime recreation, it helps curb storm water runoff, filter pollutants, cool the area and trap greenhouse gases. It is a living classroom that educates residents and visitors about the valuable contributions of prairie ecosystems.