Here are the most expensive buildings in the world.

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Commentator:    / baertaffy  

Building a nice place to work isn't cheap. The average skyscraper can run a million bucks per floor!

But some buildings are anything but average. Let's count down the most expensive buildings of all time, ranked by actual cost. We will also delve into the inflated cost, so you can see what it might cost to build such monstrosities today!

10 Most Expensive Buildings Ever Constructed