The emotional and complex legacy of September 11, 2001, made the efforts to rebuild the World Trade Center site an unprecedented challenge for the architecture profession. This book chronicles the work of one team of designers. THINK, a collaboration of four distinguished principals: Shigeru Ban, Ken Smith, Frederic Schwartz and Rafael Vinoly, was a finalist in the master planning competition. From each designer's immediate response to the loss of the Twin Towers, to the team's work for the Lower Manhattan Development Corporation's Innovative Design Study, the book presents an insider's view on the intense efforts to respond to the public's demand for planning and symbolic architecture over the eighteen months between the attacks and the selection of a master plan in February 2003.