"This gigantic concrete expanse at the foot of Woodward Avenue stretches from Jefferson Avenue to the Detroit River. Designed in the 1960s as a civic space by Isamu Noguchi, it includes his unusual twisted spire and fountain. The plaza has a stage and amphitheater and is used for ethnic riverfront festivals on summer weekends, the Ford Detroit International Jazz Festival in September and ice skating in winter. Hart Plaza provides access to a riverfront walkway, a favorite spot for fishing and for an unusual view of Canada to the south."

http://travel.yahoo.com/p-travelguide-567376-hart_plaza_detroit_attractions-i