This small courtyard garden surrounded by assorted neighboring garage walls is sustainably designed.  A 750 gallon water tank collects rainwater from a neighboring roof pitched into the garden and, in tandem with a deep gravel seepage pit in the center of the space, collects water before it penetrates the basement.  The concrete benches and paving are recycled. The fountain is covered to allow birds to perch and to prevent evaporation.  The gas firepit was poured in place.  Most of the plants are native, chosen to feed pollinators.

And here is what we started with: