This residential garden in Pasadena transformed an eroding cliff side in 2008 into a series of structurally engineered dry-stack terraces, made of recycled concrete with zero new cement. The green highlights include using local materials, with pieces from nearby Ave 64 demolition. Also, used water catchment methods and recycled aggregate drainage, planted drought tolerant natives and harvest trees, with unique use of local arroyo rock. The entire project is at least 50 feet high and 200' wide, perhaps one of the largest dry-stack urbanite retaining structure in Pasadena.