River Architects was hired to design 2- and 3-bedroom apartments on several floors in the newly constructed, glass-enclosed portion of this signature Archi-tectonics building. After considering several options presented to him, the client chose to convert three units, on floors 4, 6, and 7, into a total of five apartments. Floors 4 and 6 were large enough to provide two 2-bedroom apartments in each. The 7th floor unit was designed as one large 3-bedroom apartment that maintained the loft-like, open feel. In order to maintain the maximum visibility of the folded glass facade, we proposed steel-framed glass fin walls as the mediators between the curtain-wall and the opaque partitions.