What is the most
What is the most expensive building in the world?
The most expensive building in the world is The Burj Khalifa, a skyscraper in Dubai that is currently the tallest building in the world. It was completed in 2010 and cost a whopping US $ 1.5 bil. However, it is said to cost US $ 8 bil to build. The total cost of the project was US $ 10 bil
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