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9 of the largest buildings in the world

Dubai International Airport Terminal 3

Photo: DearEdward/Flickr

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Dubai International Airport, Terminal 3

The largest airport hub in the Middle East, Dubai's International Airport also boasts the largest airport terminal in the world. Terminal 3 is not only massive by airport standards, it also happens to be the second largest building by floor area in the world, capable of handling up to 43 million passengers a year.