Lanai Island, Hawaii
The sparsely populated island of Lanai has about 140 square miles, one small town of 3,000 people and only two landowners. Larry Ellison owns 98 percent, and the state of Florida owns the remaining two percent.
Ellison has transformed the island’s Four Seasons hotel into a magnet for vacationing wealthy people. Forbes reported that estimates of the island’s value have been close to half a billion dollars, so it’s well within your billionaire budget, but because Ellison owns 98 percent of the island, you might have a hard time convincing him to sell it.
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