13,000 foot tall skyscraper to potentially house 1,000,000 inhabitants

The X-Seed 4000 is a vision of a skyscraper, 13,000 feet tall and nearly 10 miles around at the base, that would be a whole civilization, housing up to 1,000,000 inhabitants. The plan would be for it to be a self contained society, with both living and working spaces, with water and food supplies being grown on the premises.

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