The Most Expensive Structure in the World.
The costs to this amazing feat of technical ingenuity, the International Space Station, rotating 250 miles (400 km) above the Earth, will continue to escalate beyond the budgeted $100 billion. The project began as an extension of the Russian Mir Space Station with the American Space Shuttle Programme in February 2011. When completed, it will weigh 450 tons (410,000 kg).
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