Owned by: Magician David Copperfield
Price: Purchased for $50 million
Magician David Copperfield reportedly spent $50 million on this private island in 2006 and then developed it into an ultra-luxe, ultra-private retreat for the rich and famous. There are five homes on the island that can accommodate up to 24 people, though only one group can rent it at a time. Rates start at $39,000 a night for up to 12 people. There are 40 private beaches, plus an outdoor theater, private speedboat, gym, tennis court and other amenities included. Just to ensure its exclusivity, Copperfield bought 10 other islands around it, calling it the Islands of Copperfield Bay. It's drawn an A-list clientele: Google's Sergey Brin married his ex-wife there, and Oprah Winfrey, Bill Gates and Johnny Depp have all reportedly vacationed there, according to The Real Deal. Ever the showman, the website Mushacay.com offers a grand tour, complete with a sweeping score. There's even the "Treasure of Copperfield Bay," an adventure guided by "pirates" to find some exotic hidden destinations on the island, including caves, hidden beaches and petrified lake.