12/03/2014 08:31 EST | Updated 12/03/2014 08:59 EST

The World's 10 Most Expensive Skyscrapers

The world has seen an explosion of new skyscrapers over the past decade, as rapidly developing Asian and Middle Eastern countries fall over each other to build the world's tallest, or the world's most eye-catching, new high-rise.

And as the buildings grow taller and more extravagant, costs rise with them, says construction data firm Emporis.

The company has put together a list of the world's most expensive skyscrapers; most of them were built in the past decade and not one of the buildings comes in under $1 billion U.S.

The most expensive, and by far, is One World Trade Center in New York, the building completed last month on the site of the towers destroyed in the 9/11 attacks. The cost? $3.9 billion.

There are many reasons for that huge sum, not least of which are the various security measures taken to prevent another 9/11. For many other buildings, costs associated with green technologies are driving up construction prices.

Here are the world's 10 most expensive skyscrapers, according to Emporis. (All figures in U.S. dollars.)

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