Over the last few decades, skyscrapers' heights — and thus their costs — have continued to climb.
Business Insider rounded up the most expensive towers built in the last 20 years, defining a skyscraper as a building that measures at least 500 feet tall. As you will see, not all skyscrapers feature a slender design.
Check them out below, in order from lowest to highest construction cost.
SEE ALSO: The 22 most beautiful buildings in the world, according to architects
In 2006, Indian business magnate Mukesh D. Ambani built the 27-floor Antilia skyscraper, which serves as his private residence.
At $1 billion, Antilia is the world's most expensive residential property behind Buckingham Palace. It's also designed to survive a magnitude 8 earthquake on the Richter scale.
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Source: Business Insider
The Seat of the European Central Bank (ECB) in Frankfurt, Germany cost $1.25 billion to construct in 2013.
Source: EU Business
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