In the near future, Los Angeles is an all but uninhabitable war zone, racked by crime, violence, pollution and poverty. But above the blighted city, a Utopia has arisen: Todos Santos, a thousand-foot high single-structured city, designed to used state-of-the-art technology to create a completely human-friendly environment, offering its dwellers everything they could want in exchange for their oath of allegiance and their constant surveillance . But there are those who want to see the utopia destroyed, whose answer to tomorrow's best and brightest hope is mindless violence. And they have just entered Todos Santos. . . .

"... I freaking love this book. I've re-read it from time to time over the course of the last 30 years or so, and enjoyed each read.  The science holds up pretty well. There are no cell phones; but the other incidental technologies make up for the lack. I'm not a fan of arcologies per se, but the streak of libertarianism mixed with the need, in a tightly controlled environment, for order and discipline, is very appealing. And you can't beat the catchphrase, "Think of it as evolution in action".  I found the characters engaging and human. (Shucks, one of them made me a fan of Pimm's Cup.)  While much of the book is an intellectual study, it's not boring and there's enough action and conversation that it doesn't get bogged down.... " - review