I read that the housing development was imploded today - if he's back from his travels, maybe Grrrbear can relate some hometown wisdom about Chicago's reaction.
Update: America's so lame. Cabrini Green's got nothin' on the Kowloon Walled City in Hong Kong.
Square buildings folded up into one another as thousands of modifications were made, virtually none by architects or engineers, until hundreds of square metres were simply a kind of patchwork monolith. Labyrinthine corridors ran through the monolith, some of those being former streets (at the ground level, and often clogged up with trash), and some of those running through upper floors, practically between buildings. The streets were illuminated by fluorescent lights, as sunlight was rare except for the rooftops.
The mutual decision to tear down the walled city was made in 1987.
At that time, it had 50,000 inhabitants on 0.026 km², and therefore a very high population density of 1,900,000 / km². It was allegedly the most densely populated spot on Earth.