The only full privacy that exists in the main house—since everything is surrounded by glass—is in a cube that Liebermann placed in the center of the house. It’s seven feet tall, covered with a thin sheet of fiberglass to let the light stream in from a skylight, and holds two-and-a-half bathrooms. The woodworking here is done with a mahogany finish.  Photo 9 of 17 in The Midcentury Home That Daniel Liebermann Built For His Parents Asks $2.8 Million