While it is necessary for buildings to house and shelter the programs that define them, architecture is significant when it ennobles those institutions through intellectual and emotional engagement with the people who occupy it. Buildings can give measure to one's place in the world; they provide insight and perspective. The Poetry Foundation is such a building. Accordingly, Centerline 9: The Poetry Foundation seeks to give the reader a palpable sense of the feeling of the place. With an emphasis on the physical and the phenomenal, the myriad images, drawings, sketches, and texts presented here are an attempt to give the reader access to those qualities there that are so compelling and worthwhile, and to set out a thesis that architecture is fundamentally about the built, physical artifact in relation to the broad conditions of its setting, program, and inhabitation.