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 30 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.
In Hong Kong, the Bank of China completed its 1,204-foot-tall headquarters in 1990.
The $1 billion building thins toward the peak and features sharp edges.
The Petronas Twin Towers, located in Malaysia, was constructed in 1999.
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