Stock photography, photos: Millennium Park , Chicago Stock photos of Grand Opening wekeend 7/18/2004 at The Jay Pritzker Pavilion outdoor concert venue in Chicago's Millennium Park. Designed by architect Frank Gehry Photograph: © Brian Heston Click for a larger image and more information Keywords associated with this stock photo: Millennium Park , Chicago,Illinois,IL, USA, United Staes, America,american,concert venue,outdoor,Jay Pritzker Pavilion,Frank Gehry, band shell, perfomance space, stage