Video: 'Worlds Tallest Building Unveiled In Dubai'

(Monday, January 4, 2010, 7:55 p.m. ) — Thousands of people attended the opening of the Burj Khalifa (Burj Dubai Tower), the world’s tallest building, tonight in the United Arab Emirates as part of a new development called Downtown Dubai.

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Video: 'The Tallest Building in The World (Burj Khalifa)'

At 2,717 feet, it’s more than twice as tall as New York City’s Empire State Building.