#5: Dean Kamen – North Dumpling

Island worth: $2.5 million

Dean Kamen, a name synonymous with innovation, stands as the genius behind the Segway, a personal transport marvel. Though the gyroscopic, two-wheeled sensation didn’t quite conquer the world, Kamen still cruised into a treasure trove of wealth.

Now, if you’re lucky enough to be a guest at his stunning $2.5 million, two-acre residence off the New York coast, be prepared to pay homage by addressing him as “Lord Dumpling” – it’s all part of the whimsical charm of his island haven.