Dubai, United Arab Emirates - November 22, 2011: Burj Khalifa top close up. Burj Khalifa is the world tallest construction of the world and the magnificent centerpiece of Downtown Dubai. Shutterstock Image - Dubai, United Arab Emirates - November 22, 2011: Burj Khalifa top close up. Burj Khalifa is the world tallest construction of the world and the magnificent centerpiece of Downtown Dubai. - ID: 390314785