Revealed: 10 most expensive buildings around the world

Dubai's Burj Khalifa and Qatar-backed The Shard in London made the list
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1. One World Trade Center, New York City - completed in 2014 for $3.9 billion
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2. Palace of the Parliament, Bucharest - completed in 1988 $3 billion
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3. Royal Adelaide Hospital, Adelaide - completed by 2016 for $2.1 billion
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4. The Palazzo, Las Vegas - completed in 2007 $1.9 billion
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5. The Shard, London - completed in 2013 for $1.9 billion
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6. Taipei 101, Taipei - completed in 2004 for $1.76 billion
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7. Burj Khalifa, Dubai - completed in 2010 for $1.5 billion
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8. CapitaGreen, Singapore - completed in 2014 for $1.4 billion
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9. Kyoto Station, Kyoto - completed in 1997 for $1.25 billion
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10. Elbphilharmonie, Hamburg - completed by 2016 for $1.03 billion