Mega-projects - will we ever see them?

[kenratboy]

By mega-projects, I am talking about something on a new level above Burj Dubai - rather something like Sky City 1000 in Japan - a project that is massive beyond comprehension and just isn't a building, but a entire city built in a tower.

Obviously these projects would cost countless billions of dollars and the people who would live and work in them would have to realize they are part of something new and different.

The differentiation is 'just a building' like everything that is out there now, where you can easily visit the building, work or live in it, and get in and out quickly - it is just a building. A mega-project/mega-building would be something you would live and work in full-time, and you would only leave for vacation, to visit friends, shop/visit special places (as in, leaving the building would be like leaving your region and visiting another city/part of the city, not part of your daily life).

Anyone have thoughts on this? It would be fascinating to see something like this built.