East Sister Rock Island in Marathon, FL
Price: $12 million
The Skinny: Private, remote island with its own breaker that has been designed to be self-sustaining with wind turbines and solar panels.
Bonus Zombie Defense Feature: Property includes not only a dock, but also a helicopter pad for making your escape, which might come in handy if the zombies pull a "Dawn of the Dead" reboot and figure out how to make a ship out of corpses.
