an estate in the Hawaiian Islands, specifically Kauai island .. Kauai is geologically the oldest of the main Hawaiian Islands, and with an area of 562.3 square miles, it's the fourth largest of the main islands in the Hawaiian archipelago .. known also as the garden isle, Kauai lies 105 miles across the Kauai Channel, northwest of Oahu, and is the site of waimea canyon state park .. it's the most beautiful and unspoiled of the islands, other than the sparsely populated or uninhabited islands in the Hawaiian archipelago of eight major islands, several atolls, numerous smaller islets, and undersea seamounts in the north pacific ocean, extending some 1,500 miles from the island of Hawaii..