Photos: Top 10 tallest buildings in the world
1. Burj Khalifa, Dubai (2,717 ft.)
An aerial view shows Burj Khalifa, under construction in the Gulf emirate of Dubai on December 17, 2009. The building is 163 stories tall and opened in 2010, and at 2,717 feet tall it is the world's tallest, according to Emporis, a provider of data on global construction.
Other Slideshows
New photos from ground zero of Moore tornado
Photos: EF5 tornado flattens parts of Moore, Oklahoma
Photos: Kellie Pickler named 'DWTS' champ
Photos: Forbes' list of world's most powerful women 
London terror attack leaves 1 dead near barracks
Cities (Seattle, too) that lost pro teams and got them back
