A pyramid in Dubai will house one million. f

Dubai is building another masterpiece structure shaped like a pyramid. The structure called Ziggurat will house nearly one million people and will be self-sustainable with all natural-energy sources.
Like the pyramids of the Mayans and Egyptians, this new structure in Dubai is a giant; it will cover 2.3 square kilometers (0.88 square miles) and will be able to sustain a community of up to one million people.
The “Ziggurat” is named after the temple towers of the ancient Mesopotamian valley, a terraced pyramid structure with successively receding stories. It will be a carbon-neutral structure.

http://inhabitat.com/ziggurat-dubai-carbon-neutral-pyramid-will-house-1-million/