The garden is choreographed by an array of retaining walls that create a sequence of terraced outdoor rooms. These walls were conceived of as “sticks, falling from a hand” and are the dominant features on the site, suggesting a prior geology or archeology. In addition, the retaining walls hold the hillside structurally, making the residence secure on the steep slope. Perpendicular to the concrete walls are less permanent gabion basket walls that function as a modular retention system that may be moved or reused as the garden evolves. As new spaces and programs emerge, walls and terraces may be supplemented to expand the garden in the future.