Turkey's Mardan Palace
Check out this stunning drone video of a famous ultra-luxury resort in Turkey. The Mardan Palace resort in Turkey's Antalya province had a star-studded grand opening in 2009. And well it should have: with a reported cost of $1.4 billion, the 560 room property is believed to be the most expensive in history on a per-room basis. Unfortunately, the roughly $2.5 million cost per room made the initial investment uneconomic, and the hotel was sold in 2015 for a fraction of its original cost.