This slim book is the companion to an exhibition at The Art Institute of Chicago in 2005 that documented the design process of Renzo Piano's addition to the museum, called The Modern Wing. Millennium Park opened the year before, and by then it was clear that the decision to orient the addition to the park across Monroe Street was a good one. The park was immediately successful and has continued to be a huge draw for the city, enough that Piano added a slender bridge to his design connecting an upper floor of the addition to the middle of the park. The book does a good job of explaining Piano's design, and situating it within the architect's larger oeuvre of museums, but it's just too small; the museum deserves a larger book with more thorough text delving into the design and more illustrations. That came later with 2009's "The Modern Wing: Renzo Piano and the Art Institute of Chicago."