Built for $175 million and opened in 1992, the United Center arena is home to the Bulls and the Blackhawks, and is the venue for special events such as the circus. The statue of an airborne Michael Jordan in front of the east entrance pays a lively tribute to the man whose talents financed the edifice. The center, surrounded by parking lots, is OK by day but gets pretty edgy at night – unless there’s a game, in which case squads of cops are everywhere in order to ensure public safety.