Chelsea Penthouse

Our client, a set designer, inspired us to fill this penthouse duplex with surprises: we tucked the entry closet behind his heirloom collection of Chinese screens; the stair is made of glass, which glows from the skylight above; pivoting bookcases in the library conceal a secret Murphy bed; the public rooms are defined by a big zinc cube, which houses the fireplace; and upstairs, a wall of fiber-optic tubes divides bedroom from bath.