A full-scale mock-up of the curtain wall façade for a new Ambulatory Care Center at New York Presbyterian Hospital, now in design, is lifted into place at the 69th Street and York Avenue site in New York City. The complex glass skin, with internal wood slats and exterior frit, was designed by Pei Cobb Freed & Partners Architects; the interior architecture is by HOK New York. The challenge for CBB was to light the façade internally so that it glows evenly. LED fixtures perpendicular to the window wall uplight the ceiling and rear wall, while LED strips detailed into the window mullions light the upper ceiling and the pocket formed between the soffit and spandrel level. The mock-up also tested a variety of paint finishes and shades for patient privacy. The mock-up confirms the successful façade lighting results anticipated by CBB’s photometric studies!