Anchoring a busy residential corner on Madison Avenue in Manhattan’s Carnegie Hill Historic District, the distinctive Graham House, once an unsuccessful 19th century residential hotel, has been transformed by PBDW Architects into a vibrant new campus for Saint David’s School’s 400 elementary and middle school boys. Following an eight-year-long adaptive-reuse process, the long-neglected edifice is filled with the sound of happy, young voices and renewed purpose while its beautifully restored exterior enlivens the surrounding neighborhood.