Ando used the space within the two rectangular prisms as a way to express the fundamental nature of the site. This space reveals a courtyard that drapes over and contours to the natural topography. A wide set of stairs follows the sloping land into the enclosed exterior space and allows the light that penetrates through the canopy of trees into the sunken courtyard. This self-governing space represents the fold of nature that has been bound by the conditioned structures and become synthetic.