open air tree lined pedestrian walkway opened july millennium park located loop community area chicago illinois united_states possible gift acres exhibitions festivals family events private hosted revealing chicago aerial portrait photo exhibition paintings zero exhibition cornerstone plan centennial celebration details lying lake michigan east loop west chicago yard mid-19th century northwest corner north monroe street east michigan avenue south street west columbus drive rail yards parking lots available development city millennium park today millennium park trails navy pier chicago tourist attraction spans park street north monroe street south sections year available private rental permanent tent anchors year round past exhibitions city host festivals exhibitions aerial portrait displayed june october exhibit featured images chicago metropolitan area taken flights occurred march august seasons year photographer says photographs taken helicopter preferred method travel hot air balloon chicago usually shoot balloon chicago_tribune art critic noted mark installation hosted smaller limited pieces bit tightly felt served better forum left artist choose wider range pieces february february millennium park hosted winter celebration called event featured exhibition located artist entitled paintings zero exhibition centerpiece abstract artwork surface ice panels measured feet addition ice wall painting painted surface celebration fifth anniversary millennium park 100th anniversary include temporary privately funded located south end feature information highlighting implications chicago present future display june october
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