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Architect Rem Koolhaas gestures toward a model of a high-rise building that his firm designed, that is on display at the Jersey City Museum in Jersey City, N.J., Monday, Feb. 26, 2007. The mixed-use 52-story tower, to be built in Jersey City, is composed of perpendicular rectangles, including condos, a hotel, artist studios, gallery and retail space just across the Hudson River from New York. (AP Photo/Mike Derer)