Keewaydin Island, off Naples, is known for its 7-mile-long pristine beach and secluded homes that offer an “off the grid” living experience, free of municipal power and, in most cases, with a self-sustained source of electricity, such as solar panels. Keewaydin Island has about 50 lots and a total of 12 homes on it. Most are powered by solar panels and use large rain barrels for self-sustainability. In recent years, Keewaydin Island was ranked No. 3 on the list of 10 best secret beaches, according to Coastal Living. It is known for hosting private weddings; it's a tourist destination spot; and it once had a vacation home of Vice President Joe Biden’s brother, James Biden Jr., and his wife.