Bound by the four elements of nature—earth, wind, water, and fire—the Falling Leaves House by Bercy Chen Studio is a tree house–like sanctuary for one young family, along with the surrounding habitat of cedars, oaks, mule deer, and the endangered golden-cheeked Warbler. Inspired by the shapes and curled edges of falling oak leaves, the compound’s sheltering roofs and glass pavilions cascade into the landscape.