The 4,680-acre island includes a 5-bedroom main house and a caretaker’s cottage.
The private island is completely off the grid: water, electricity and cable are all accessible.
Located a quarter-mile off-shore Marathon, FL, East Sister Rock Island is a small and private oasis surrounded by sand and coral reef.
Tech billionaire Paul Allen recently listed his private isle in the San Juans for $13.5 million.
Looking for the ultimate in real estate privacy? How about a private island?