When I was in Junior High, I read the Asimov Robot and Foundation series, and became enamored with the Cities. These were mostly underground complexes that stretched over vast swaths of land. People could live in the Cities and never go outside. I know. I know. My Junior High paradise is most people's hell, but I loved the idea.
Now, architects in Dubai are proposing an entire city housed in one massive skyscraper, called the Ziggurat. My favorite part of the plan is the transportation provided through "an integrated 360 degree network (horizontally and vertically) so cars would be redundant." Cool!
If anyone ever builds it -- and I wouldn't put it past those oil-rich Dubai nuts -- I definitely want to visit. Although, I'm not sure I'd want to live in a City any more. Where would I walk the dogs without a Boston Hill?