Not content with the world's tallest tower, first underwater hotel, and scariest of all tennis courts, the United Arab Emirates just revealed plans for the first-ever temperature-controlled city to be constructed in (surprise!) Dubai. Designed to cover 48 million square feet, the bonkers Mall of the World will include a replica of Barcelona's La Rambla, an entire theater district, and at least 20,000 hotel rooms. Read on. [Designboom; previously]
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