This multi-level PH designed for living and working sits atop a 12-story turn of the century building in lower Manhattan.  Conceived both architecturally and programmatically as 3 distinct elements, (floating horizontal mass = master bedroom apartment; vertical mass = children’s duplex; and lower north section = office and library) were separated and connected by contiguous common areas. The voids between these volumetric figures are the open spaces that tie the architectural assembly together.  These spaces unite to form a continuous zone of interior and exterior circulation spaces, comprised of a garden court, a vertically oriented atrium containing the main stair, and the open area of the main space below the suspended east volume.   The central atrium is defined by curtain wall and skylight assemblies and has a suspended glass floor mezzanine. A decommissioned (and monumental) masonry chimney is incorporated into the glass curtain wall on the south side of the atrium opposite the stair. The project won the prestigious Chicago Athenaum Prize for American Architecture in 2005 as well as AIA design awards.