Holiday-makers watch the fish in the giant tank at Atlantis the Palm Hotel on February 23, 2012 in Dubai, United Arab Emirates. The 11-million litre aquarium contains over 65,000 fish, stingrays and other sea creatures. (Photo by Chris Jackson/Getty Images)

A general view of the Burj Khalifa on February 23, 2012 in Dubai, United Arab Emirates. At 829.84 m (2723 ft) tall the Burj Khalifa is currently the tallest building in the world. (Photo by Chris Jackson/Getty Images)