This stunning volume celebrates the May 2009 opening of the largest expansion in the history of the Art Institute of Chicago. The Modern Wing, designed by Renzo Piano—principal of the Renzo Piano Building Workshop—is situated directly opposite Millennium Park and its major feature, Frank Gehry’s celebrated Jay Pritzker Pavilion. In contrast to the pavilion’s brushed stainless-steel ribbons, Piano’s rectangular addition uses Indiana limestone, a double curtain wall of glass, and a “flying carpet” roof cover. The dialogue between these two totally different structures is underscored by Piano’s arresting Nichols Bridgeway, a 620-foot-long elevated walkway that, crossing Monroe Street, connects museum and park.