The Chicago Bulls commemorated their phenomenal decade of 1987-1997 by commissioning this 3-dimensional art, which also reflects major world events over the same time period. The Bulls gave souvenir posters to fans at their 500th sell-out game. The collage incorporates an actual basketball on which the world appears, symbolizing the Bulls’ five world championships. Along the sides are red plexiglass ingots with team rosters and season records.