One of the most incredible structures on Earth, the Burj Al Arab, was built in the shape of an Arabian dhow, or yacht's sail. The planners wanted a monolithic structure, but neither did they want to cast a shadow over downtown Dubai, so they built it 280 meters out to sea.
The entrance hall is lined with rare Statutario marble (the same kind used by Michelangelo in his sculptures). In total, precious marble covers 24,000 square meters in the hotel.
But you can't have marble without gold, so 1790 square meters of 24-carat gold leaf was also used to embellish the interior.