National Geographic : 2017 Oct
Dubai touts its superlatives. At the Green Planet, visitors walk around an 82-foot artificial tree—claimed to be the world’s largest—in a rain forest habitat that shelters 3,000 species of tropical plants and animals. The biodome is one of the city’s growing number of “green buildings,” which meet a high standard for energy efficiency. Preceding pages: Tourists flock to Burj Khalifa, the world’s tallest skyscraper at 2,717 feet, for this bird’s-eye view. Some urban plans call for scaling down—the opera house (bottom center) is part of a new ground-level district designed to encourage strolling and to link to mass transit in the car-centric city.