A handout picture dated April 7, 2007 shows the construction site of the Burj Dubai (Dubai Tower), in the United Arab Emirate of Dubai. (Photo by AFP/Getty Images)
Burj Dubai Tower
This photo taken on June 1, 2009 shows the traffic on an avenue in Dubai and the Burj Dubai tower at right. (Photo by Oliver Lang/AFP/Getty Images)
Burj Dubai Towers
Burj Dubai (C) dwarfs the city skyline of Dubai, on Dec. 21, 2009. (Photo by Marwan Naamani/AFP/Getty Images)
Burj Dubai Tower
A billboard bearing pictures of UAE President, Sheikh Khalifa bin Zayed al-Nahayan (R), and Ruler of Dubai, Sheikh Mohammad bin Rashed al-Maktoum (L), is lit underneath Dubai's Burj Khalifa tower, the world's tallest skyscraper, during its opening ceremony in the Gulf emirate on Jan. 4, 2010. (Photo by Karim Sahib/AFP/Getty Images)
Burj Khalifa Tower
Emirati men walk past Burj Dubai, the world's tallest tower, on Jan. 04, 2010. (Photo by Karim Sahib/AFP/Getty Images)
Burj Khalifa Tower
A journalist reports from the top of Burj Dubai, the world's tallest tower, on Jan. 04, 2010. (Photo by Karim Sahib/AFP/Getty Images)
Burj Khalifa Tower
Tourists look at Dubai's Burj Khalifa (C), the world's tallest tower, on April 5, 2010. (Photo by Karim Sahib/AFP/Getty Images)
Burj Khalifa Tower
An aerial view shows Burj Dubai, the world's tallest tower built by Emaar property developer, rising among skyscrapers in the Gulf emirate of Dubai on Dec. 17, 2009. (Photo by Marwan Naamani/AFP/Getty Images)
Burj Khalifa Tower
An Emarati man points toward the city as he watch from the top of Burj Dubai, the world's tallest tower on Jan. 4, 2010. (Photo by Karim Sahib/AFP/Getty Images)
Burj Khalifa Tower
Dubai's Burj Khalifa tower, the world's tallest skyscraper, is lit by laser lights during its opening ceremony in the Gulf emirate on Jan. 4, 2010. (Photo by Karim Sahib/AFP/Getty Images)