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Forbes: Off-the-Grid Mansions

Castle of Palatine Hills, Rincon, Puerto Rico

List Price: $4.8 million
Listed with: Exit Realty Select

This 10,000-square-foot Caribbean fortress inhabits its own private mountain on Puerto Rico's west coast. It's powered almost entirely by alternative energy methods including solar panels and a wind turbine. A private helicopter pad offers easy arrival and departure.


More from Forbes:
The Most Outrageous Garages
Mansions you can get Married in
Homes with Notorious Histories

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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