North Dumpling Island is a small piece of land just off the coast of Connecticut and the private residence of Dean Kamen, inventor of the Segway Personal Transporter.
Like any good inventor it seems Kamen is a wee bit eccentric, having declared the island to be an independent state with its own currency (in increments of Pi) and its own navy, consisting solely of the amphibious vehicle we can see parked beside the north-east building.
Although his independence isn’t officially recognised Kamen even signed a non-aggression pact with then-president George H.W. Bush.
Thanks: Pat Trainor
From Google Sightseeing