Inside Dubai's Emirates Hills, the playground for super rich, celebs and world billionaires like Lakshmi Mittal

“You can’t replicate what you get here—privacy, greenery, ultra-luxury, and scale,” says Dubai-based businessman Mahesh Tourani, seated beneath a banyan tree inside his 50,000-square-foot Emirates Hills mansion. “I come from Mumbai, where we long for trees and bridges. This place gives you that, with the infrastructure of Dubai.” Tourani’s reflection…