Since 2004, the company behind the Hotelicopter has been working to modify a Soviet-made Mil V-12 into two world firsts: the "world's biggest helicopter" and the "world's first flying hotel." — Photo by hotelicopter

Since 2004, the company behind the Hotelicopter has been working to modify a Soviet-made Mil V-12 into two world firsts: the "world's biggest helicopter" and the "world's first flying hotel."

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