By locating a single but complex green millwork box at the center of the long apartment, circulation can flow around all sides. In the box are hidden all the kitchen and bath services; around it are public rooms that face a view of the city on two sides and, on the interior, a more private enfilade of rooms for bathing. The palette of rich colors contrasts with neutral raw concrete walls and ceilings; in addition to the deep green of the central millwork are richly colored natural quartzite stones, terrazzo, brass, botanical silks and colorful fabrics designed by Josef Frank.